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Finding the Fourth Proportional to 157,486.89, 217,327.98 and 85,868.31

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Solution

The fourth proportional to 157,486.89, 217,327.98 and 85,868.31 is: 118,496.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,486.89 : 217,327.98 = 85,868.31 : x
  2. Step 2: Convert to fraction form
    157,486.89/217,327.98 = 85,868.31/x
  3. Step 3: Cross multiply
    157,486.89x = 217,327.98 × 85,868.31
  4. Step 4: Simplify right side
    157,486.89x = 18,661,586,358.31
  5. Step 5: Solve for x
    x = 18,661,586,358.31/157,486.89
  6. Step 6: Final answer
    x = 118,496.13

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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.