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Finding the Fourth Proportional to 157,883.47, 217,872.78 and 86,265.97

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Solution

The fourth proportional to 157,883.47, 217,872.78 and 86,265.97 is: 119,043.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,883.47 : 217,872.78 = 86,265.97 : x
  2. Step 2: Convert to fraction form
    157,883.47/217,872.78 = 86,265.97/x
  3. Step 3: Cross multiply
    157,883.47x = 217,872.78 × 86,265.97
  4. Step 4: Simplify right side
    157,883.47x = 18,795,005,613.93
  5. Step 5: Solve for x
    x = 18,795,005,613.93/157,883.47
  6. Step 6: Final answer
    x = 119,043.53

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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.