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Finding the Fourth Proportional to 125,308.56, 172,924.20 and 71,593.16

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Solution

The fourth proportional to 125,308.56, 172,924.20 and 71,593.16 is: 98,797.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,308.56 : 172,924.20 = 71,593.16 : x
  2. Step 2: Convert to fraction form
    125,308.56/172,924.20 = 71,593.16/x
  3. Step 3: Cross multiply
    125,308.56x = 172,924.20 × 71,593.16
  4. Step 4: Simplify right side
    125,308.56x = 12,380,189,918.47
  5. Step 5: Solve for x
    x = 12,380,189,918.47/125,308.56
  6. Step 6: Final answer
    x = 98,797.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.