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Finding the Fourth Proportional to 89,036.70, 133,555.05 and 85,100.10

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Solution

The fourth proportional to 89,036.70, 133,555.05 and 85,100.10 is: 127,650.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,036.70 : 133,555.05 = 85,100.10 : x
  2. Step 2: Convert to fraction form
    89,036.70/133,555.05 = 85,100.10/x
  3. Step 3: Cross multiply
    89,036.70x = 133,555.05 × 85,100.10
  4. Step 4: Simplify right side
    89,036.70x = 11,365,548,110.51
  5. Step 5: Solve for x
    x = 11,365,548,110.51/89,036.70
  6. Step 6: Final answer
    x = 127,650.15

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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.