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Finding the Fourth Proportional to 157,925.70, 217,936.31 and 86,304.15

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Solution

The fourth proportional to 157,925.70, 217,936.31 and 86,304.15 is: 119,099.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,925.70 : 217,936.31 = 86,304.15 : x
  2. Step 2: Convert to fraction form
    157,925.70/217,936.31 = 86,304.15/x
  3. Step 3: Cross multiply
    157,925.70x = 217,936.31 × 86,304.15
  4. Step 4: Simplify right side
    157,925.70x = 18,808,807,557.17
  5. Step 5: Solve for x
    x = 18,808,807,557.17/157,925.70
  6. Step 6: Final answer
    x = 119,099.09

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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.