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Finding the Fourth Proportional to 369,424.60, 554,136.90 and 132,791.20

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Solution

The fourth proportional to 369,424.60, 554,136.90 and 132,791.20 is: 199,186.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,424.60 : 554,136.90 = 132,791.20 : x
  2. Step 2: Convert to fraction form
    369,424.60/554,136.90 = 132,791.20/x
  3. Step 3: Cross multiply
    369,424.60x = 554,136.90 × 132,791.20
  4. Step 4: Simplify right side
    369,424.60x = 73,584,503,915.28
  5. Step 5: Solve for x
    x = 73,584,503,915.28/369,424.60
  6. Step 6: Final answer
    x = 199,186.80

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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.