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Finding the Fourth Proportional to 71,425.64, 107,145.56 and 26,459.02

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Solution

The fourth proportional to 71,425.64, 107,145.56 and 26,459.02 is: 39,691.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,425.64 : 107,145.56 = 26,459.02 : x
  2. Step 2: Convert to fraction form
    71,425.64/107,145.56 = 26,459.02/x
  3. Step 3: Cross multiply
    71,425.64x = 107,145.56 × 26,459.02
  4. Step 4: Simplify right side
    71,425.64x = 2,834,966,514.95
  5. Step 5: Solve for x
    x = 2,834,966,514.95/71,425.64
  6. Step 6: Final answer
    x = 39,691.16

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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.