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Finding the Fourth Proportional to 71,962.40, 107,864.40 and 25,191.20

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Solution

The fourth proportional to 71,962.40, 107,864.40 and 25,191.20 is: 37,759.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,962.40 : 107,864.40 = 25,191.20 : x
  2. Step 2: Convert to fraction form
    71,962.40/107,864.40 = 25,191.20/x
  3. Step 3: Cross multiply
    71,962.40x = 107,864.40 × 25,191.20
  4. Step 4: Simplify right side
    71,962.40x = 2,717,233,673.28
  5. Step 5: Solve for x
    x = 2,717,233,673.28/71,962.40
  6. Step 6: Final answer
    x = 37,759.08

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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.