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Finding the Fourth Proportional to 656,830.80, 984,079.80 and 614,840.40

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Solution

The fourth proportional to 656,830.80, 984,079.80 and 614,840.40 is: 921,168.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,830.80 : 984,079.80 = 614,840.40 : x
  2. Step 2: Convert to fraction form
    656,830.80/984,079.80 = 614,840.40/x
  3. Step 3: Cross multiply
    656,830.80x = 984,079.80 × 614,840.40
  4. Step 4: Simplify right side
    656,830.80x = 605,052,017,863.92
  5. Step 5: Solve for x
    x = 605,052,017,863.92/656,830.80
  6. Step 6: Final answer
    x = 921,168.77

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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.