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Finding the Fourth Proportional to 865,559.80, 1,296,006.90 and 627,614.20

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Solution

The fourth proportional to 865,559.80, 1,296,006.90 and 627,614.20 is: 939,729.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,559.80 : 1,296,006.90 = 627,614.20 : x
  2. Step 2: Convert to fraction form
    865,559.80/1,296,006.90 = 627,614.20/x
  3. Step 3: Cross multiply
    865,559.80x = 1,296,006.90 × 627,614.20
  4. Step 4: Simplify right side
    865,559.80x = 813,392,333,737.98
  5. Step 5: Solve for x
    x = 813,392,333,737.98/865,559.80
  6. Step 6: Final answer
    x = 939,729.80

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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.