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Finding the Fourth Proportional to 639,011.80, 958,517.70 and 534,035.80

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Solution

The fourth proportional to 639,011.80, 958,517.70 and 534,035.80 is: 801,053.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,011.80 : 958,517.70 = 534,035.80 : x
  2. Step 2: Convert to fraction form
    639,011.80/958,517.70 = 534,035.80/x
  3. Step 3: Cross multiply
    639,011.80x = 958,517.70 × 534,035.80
  4. Step 4: Simplify right side
    639,011.80x = 511,882,766,733.66
  5. Step 5: Solve for x
    x = 511,882,766,733.66/639,011.80
  6. Step 6: Final answer
    x = 801,053.70

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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.