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Finding the Fourth Proportional to 107,712.61, 148,620.84 and 62,387.84

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Solution

The fourth proportional to 107,712.61, 148,620.84 and 62,387.84 is: 86,082.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,712.61 : 148,620.84 = 62,387.84 : x
  2. Step 2: Convert to fraction form
    107,712.61/148,620.84 = 62,387.84/x
  3. Step 3: Cross multiply
    107,712.61x = 148,620.84 × 62,387.84
  4. Step 4: Simplify right side
    107,712.61x = 9,272,133,186.59
  5. Step 5: Solve for x
    x = 9,272,133,186.59/107,712.61
  6. Step 6: Final answer
    x = 86,082.15

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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.