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Finding the Fourth Proportional to 591,711.10, 887,566.65 and 217,879.90

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Solution

The fourth proportional to 591,711.10, 887,566.65 and 217,879.90 is: 326,819.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,711.10 : 887,566.65 = 217,879.90 : x
  2. Step 2: Convert to fraction form
    591,711.10/887,566.65 = 217,879.90/x
  3. Step 3: Cross multiply
    591,711.10x = 887,566.65 × 217,879.90
  4. Step 4: Simplify right side
    591,711.10x = 193,382,932,945.34
  5. Step 5: Solve for x
    x = 193,382,932,945.34/591,711.10
  6. Step 6: Final answer
    x = 326,819.85

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Double scale
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Similar ratio
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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.