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Finding the Fourth Proportional to 432,562.20, 648,891.90 and 133,040.40

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Solution

The fourth proportional to 432,562.20, 648,891.90 and 133,040.40 is: 199,575.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,562.20 : 648,891.90 = 133,040.40 : x
  2. Step 2: Convert to fraction form
    432,562.20/648,891.90 = 133,040.40/x
  3. Step 3: Cross multiply
    432,562.20x = 648,891.90 × 133,040.40
  4. Step 4: Simplify right side
    432,562.20x = 86,328,837,932.76
  5. Step 5: Solve for x
    x = 86,328,837,932.76/432,562.20
  6. Step 6: Final answer
    x = 199,575.55

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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.