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Finding the Fourth Proportional to 127,808.78, 191,706.17 and 39,062.24

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Solution

The fourth proportional to 127,808.78, 191,706.17 and 39,062.24 is: 58,591.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,808.78 : 191,706.17 = 39,062.24 : x
  2. Step 2: Convert to fraction form
    127,808.78/191,706.17 = 39,062.24/x
  3. Step 3: Cross multiply
    127,808.78x = 191,706.17 × 39,062.24
  4. Step 4: Simplify right side
    127,808.78x = 7,488,471,268.18
  5. Step 5: Solve for x
    x = 7,488,471,268.18/127,808.78
  6. Step 6: Final answer
    x = 58,591.21

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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.