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Finding the Fourth Proportional to 639,732.70, 961,024.65 and 534,756.70

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Solution

The fourth proportional to 639,732.70, 961,024.65 and 534,756.70 is: 803,326.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,732.70 : 961,024.65 = 534,756.70 : x
  2. Step 2: Convert to fraction form
    639,732.70/961,024.65 = 534,756.70/x
  3. Step 3: Cross multiply
    639,732.70x = 961,024.65 × 534,756.70
  4. Step 4: Simplify right side
    639,732.70x = 513,914,370,452.66
  5. Step 5: Solve for x
    x = 513,914,370,452.66/639,732.70
  6. Step 6: Final answer
    x = 803,326.72

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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.