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Finding the Fourth Proportional to 361,851.60, 542,680.20 and 125,266.80

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Solution

The fourth proportional to 361,851.60, 542,680.20 and 125,266.80 is: 187,866.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,851.60 : 542,680.20 = 125,266.80 : x
  2. Step 2: Convert to fraction form
    361,851.60/542,680.20 = 125,266.80/x
  3. Step 3: Cross multiply
    361,851.60x = 542,680.20 × 125,266.80
  4. Step 4: Simplify right side
    361,851.60x = 67,979,812,077.36
  5. Step 5: Solve for x
    x = 67,979,812,077.36/361,851.60
  6. Step 6: Final answer
    x = 187,866.55

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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.