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Finding the Fourth Proportional to 83,861.81, 125,792.72 and 57,486.59

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Solution

The fourth proportional to 83,861.81, 125,792.72 and 57,486.59 is: 86,229.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,861.81 : 125,792.72 = 57,486.59 : x
  2. Step 2: Convert to fraction form
    83,861.81/125,792.72 = 57,486.59/x
  3. Step 3: Cross multiply
    83,861.81x = 125,792.72 × 57,486.59
  4. Step 4: Simplify right side
    83,861.81x = 7,231,393,603.23
  5. Step 5: Solve for x
    x = 7,231,393,603.23/83,861.81
  6. Step 6: Final answer
    x = 86,229.88

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1.5x scale

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.