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Finding the Fourth Proportional to 621,311.25, 930,472.17 and 354,262.14

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Solution

The fourth proportional to 621,311.25, 930,472.17 and 354,262.14 is: 530,540.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,311.25 : 930,472.17 = 354,262.14 : x
  2. Step 2: Convert to fraction form
    621,311.25/930,472.17 = 354,262.14/x
  3. Step 3: Cross multiply
    621,311.25x = 930,472.17 × 354,262.14
  4. Step 4: Simplify right side
    621,311.25x = 329,631,062,154.64
  5. Step 5: Solve for x
    x = 329,631,062,154.64/621,311.25
  6. Step 6: Final answer
    x = 530,540.95

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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.