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Finding the Fourth Proportional to 135,472.16, 187,042.90 and 84,562.42

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Solution

The fourth proportional to 135,472.16, 187,042.90 and 84,562.42 is: 116,753.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,472.16 : 187,042.90 = 84,562.42 : x
  2. Step 2: Convert to fraction form
    135,472.16/187,042.90 = 84,562.42/x
  3. Step 3: Cross multiply
    135,472.16x = 187,042.90 × 84,562.42
  4. Step 4: Simplify right side
    135,472.16x = 15,816,800,267.82
  5. Step 5: Solve for x
    x = 15,816,800,267.82/135,472.16
  6. Step 6: Final answer
    x = 116,753.14

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1.5x scale

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.