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Finding the Fourth Proportional to 471,825.80, 707,738.70 and 156,331.40

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Solution

The fourth proportional to 471,825.80, 707,738.70 and 156,331.40 is: 234,497.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,825.80 : 707,738.70 = 156,331.40 : x
  2. Step 2: Convert to fraction form
    471,825.80/707,738.70 = 156,331.40/x
  3. Step 3: Cross multiply
    471,825.80x = 707,738.70 × 156,331.40
  4. Step 4: Simplify right side
    471,825.80x = 110,641,781,805.18
  5. Step 5: Solve for x
    x = 110,641,781,805.18/471,825.80
  6. Step 6: Final answer
    x = 234,497.10

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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.