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Finding the Fourth Proportional to 185,882.67, 278,449.79 and 85,905.18

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Solution

The fourth proportional to 185,882.67, 278,449.79 and 85,905.18 is: 128,684.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,882.67 : 278,449.79 = 85,905.18 : x
  2. Step 2: Convert to fraction form
    185,882.67/278,449.79 = 85,905.18/x
  3. Step 3: Cross multiply
    185,882.67x = 278,449.79 × 85,905.18
  4. Step 4: Simplify right side
    185,882.67x = 23,920,278,901.39
  5. Step 5: Solve for x
    x = 23,920,278,901.39/185,882.67
  6. Step 6: Final answer
    x = 128,684.83

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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.