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Finding the Fourth Proportional to 86,612.76, 119,444.49 and 57,489.62

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Solution

The fourth proportional to 86,612.76, 119,444.49 and 57,489.62 is: 79,281.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,612.76 : 119,444.49 = 57,489.62 : x
  2. Step 2: Convert to fraction form
    86,612.76/119,444.49 = 57,489.62/x
  3. Step 3: Cross multiply
    86,612.76x = 119,444.49 × 57,489.62
  4. Step 4: Simplify right side
    86,612.76x = 6,866,817,743.97
  5. Step 5: Solve for x
    x = 6,866,817,743.97/86,612.76
  6. Step 6: Final answer
    x = 79,281.83

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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.