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Finding the Fourth Proportional to 157,881.67, 217,874.13 and 86,260.15

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Solution

The fourth proportional to 157,881.67, 217,874.13 and 86,260.15 is: 119,037.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,881.67 : 217,874.13 = 86,260.15 : x
  2. Step 2: Convert to fraction form
    157,881.67/217,874.13 = 86,260.15/x
  3. Step 3: Cross multiply
    157,881.67x = 217,874.13 × 86,260.15
  4. Step 4: Simplify right side
    157,881.67x = 18,793,855,134.92
  5. Step 5: Solve for x
    x = 18,793,855,134.92/157,881.67
  6. Step 6: Final answer
    x = 119,037.60

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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.