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Finding the Fourth Proportional to 643,591.80, 965,387.70 and 614,067.30

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Solution

The fourth proportional to 643,591.80, 965,387.70 and 614,067.30 is: 921,100.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,591.80 : 965,387.70 = 614,067.30 : x
  2. Step 2: Convert to fraction form
    643,591.80/965,387.70 = 614,067.30/x
  3. Step 3: Cross multiply
    643,591.80x = 965,387.70 × 614,067.30
  4. Step 4: Simplify right side
    643,591.80x = 592,813,018,392.21
  5. Step 5: Solve for x
    x = 592,813,018,392.21/643,591.80
  6. Step 6: Final answer
    x = 921,100.95

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Similar ratio
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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.