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Finding the Fourth Proportional to 83,913.17, 115,808.54 and 62,655.53

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Solution

The fourth proportional to 83,913.17, 115,808.54 and 62,655.53 is: 86,470.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,913.17 : 115,808.54 = 62,655.53 : x
  2. Step 2: Convert to fraction form
    83,913.17/115,808.54 = 62,655.53/x
  3. Step 3: Cross multiply
    83,913.17x = 115,808.54 × 62,655.53
  4. Step 4: Simplify right side
    83,913.17x = 7,256,044,559.91
  5. Step 5: Solve for x
    x = 7,256,044,559.91/83,913.17
  6. Step 6: Final answer
    x = 86,470.87

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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.