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Finding the Fourth Proportional to 539,057.40, 807,905.70 and 272,891.40

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Solution

The fourth proportional to 539,057.40, 807,905.70 and 272,891.40 is: 408,992.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,057.40 : 807,905.70 = 272,891.40 : x
  2. Step 2: Convert to fraction form
    539,057.40/807,905.70 = 272,891.40/x
  3. Step 3: Cross multiply
    539,057.40x = 807,905.70 × 272,891.40
  4. Step 4: Simplify right side
    539,057.40x = 220,470,517,540.98
  5. Step 5: Solve for x
    x = 220,470,517,540.98/539,057.40
  6. Step 6: Final answer
    x = 408,992.66

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1.5x scale

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.