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Finding the Fourth Proportional to 85,100,543,998.65, 127,650,815,997.97 and 85,100,543,998.65

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Solution

The fourth proportional to 85,100,543,998.65, 127,650,815,997.97 and 85,100,543,998.65 is: 127,650,815,997.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,100,543,998.65 : 127,650,815,997.97 = 85,100,543,998.65 : x
  2. Step 2: Convert to fraction form
    85,100,543,998.65/127,650,815,997.97 = 85,100,543,998.65/x
  3. Step 3: Cross multiply
    85,100,543,998.65x = 127,650,815,997.97 × 85,100,543,998.65
  4. Step 4: Simplify right side
    85,100,543,998.65x = 10,863,153,883,298,819,735,552
  5. Step 5: Solve for x
    x = 10,863,153,883,298,819,735,552/85,100,543,998.65
  6. Step 6: Final answer
    x = 127,650,815,997.97

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.