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Finding the Fourth Proportional to 127,099.72, 190,649.58 and 43,993.72

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Solution

The fourth proportional to 127,099.72, 190,649.58 and 43,993.72 is: 65,990.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,099.72 : 190,649.58 = 43,993.72 : x
  2. Step 2: Convert to fraction form
    127,099.72/190,649.58 = 43,993.72/x
  3. Step 3: Cross multiply
    127,099.72x = 190,649.58 × 43,993.72
  4. Step 4: Simplify right side
    127,099.72x = 8,387,384,240.64
  5. Step 5: Solve for x
    x = 8,387,384,240.64/127,099.72
  6. Step 6: Final answer
    x = 65,990.58

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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.