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Finding the Fourth Proportional to 580,438.29, 870,321.19 and 225,036.21

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Solution

The fourth proportional to 580,438.29, 870,321.19 and 225,036.21 is: 337,423.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,438.29 : 870,321.19 = 225,036.21 : x
  2. Step 2: Convert to fraction form
    580,438.29/870,321.19 = 225,036.21/x
  3. Step 3: Cross multiply
    580,438.29x = 870,321.19 × 225,036.21
  4. Step 4: Simplify right side
    580,438.29x = 195,853,782,080.29
  5. Step 5: Solve for x
    x = 195,853,782,080.29/580,438.29
  6. Step 6: Final answer
    x = 337,423.95

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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.