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Finding the Fourth Proportional to 119,323.55, 164,691.56 and 75,687.89

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Solution

The fourth proportional to 119,323.55, 164,691.56 and 75,687.89 is: 104,465.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,323.55 : 164,691.56 = 75,687.89 : x
  2. Step 2: Convert to fraction form
    119,323.55/164,691.56 = 75,687.89/x
  3. Step 3: Cross multiply
    119,323.55x = 164,691.56 × 75,687.89
  4. Step 4: Simplify right side
    119,323.55x = 12,465,156,042.97
  5. Step 5: Solve for x
    x = 12,465,156,042.97/119,323.55
  6. Step 6: Final answer
    x = 104,465.18

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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.