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Finding the Fourth Proportional to 86,333.65, 129,520.51 and 27,167.78

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Solution

The fourth proportional to 86,333.65, 129,520.51 and 27,167.78 is: 40,757.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,333.65 : 129,520.51 = 27,167.78 : x
  2. Step 2: Convert to fraction form
    86,333.65/129,520.51 = 27,167.78/x
  3. Step 3: Cross multiply
    86,333.65x = 129,520.51 × 27,167.78
  4. Step 4: Simplify right side
    86,333.65x = 3,518,784,721.17
  5. Step 5: Solve for x
    x = 3,518,784,721.17/86,333.65
  6. Step 6: Final answer
    x = 40,757.97

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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.