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Finding the Fourth Proportional to 434,553.70, 651,879.15 and 135,031.90

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Solution

The fourth proportional to 434,553.70, 651,879.15 and 135,031.90 is: 202,562.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,553.70 : 651,879.15 = 135,031.90 : x
  2. Step 2: Convert to fraction form
    434,553.70/651,879.15 = 135,031.90/x
  3. Step 3: Cross multiply
    434,553.70x = 651,879.15 × 135,031.90
  4. Step 4: Simplify right side
    434,553.70x = 88,024,480,194.89
  5. Step 5: Solve for x
    x = 88,024,480,194.89/434,553.70
  6. Step 6: Final answer
    x = 202,562.95

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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.