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Finding the Fourth Proportional to 95,472.79, 143,190.73 and 90,731.11

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Solution

The fourth proportional to 95,472.79, 143,190.73 and 90,731.11 is: 136,079.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,472.79 : 143,190.73 = 90,731.11 : x
  2. Step 2: Convert to fraction form
    95,472.79/143,190.73 = 90,731.11/x
  3. Step 3: Cross multiply
    95,472.79x = 143,190.73 × 90,731.11
  4. Step 4: Simplify right side
    95,472.79x = 12,991,853,874.61
  5. Step 5: Solve for x
    x = 12,991,853,874.61/95,472.79
  6. Step 6: Final answer
    x = 136,079.13

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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.