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Finding the Fourth Proportional to 398,866.01, 598,304.24 and 132,626.53

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Solution

The fourth proportional to 398,866.01, 598,304.24 and 132,626.53 is: 198,941.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,866.01 : 598,304.24 = 132,626.53 : x
  2. Step 2: Convert to fraction form
    398,866.01/598,304.24 = 132,626.53/x
  3. Step 3: Cross multiply
    398,866.01x = 598,304.24 × 132,626.53
  4. Step 4: Simplify right side
    398,866.01x = 79,351,015,817.58
  5. Step 5: Solve for x
    x = 79,351,015,817.58/398,866.01
  6. Step 6: Final answer
    x = 198,941.54

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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.