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Finding the Fourth Proportional to 361,815.66, 542,772.90 and 125,094.78

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Solution

The fourth proportional to 361,815.66, 542,772.90 and 125,094.78 is: 187,659.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,815.66 : 542,772.90 = 125,094.78 : x
  2. Step 2: Convert to fraction form
    361,815.66/542,772.90 = 125,094.78/x
  3. Step 3: Cross multiply
    361,815.66x = 542,772.90 × 125,094.78
  4. Step 4: Simplify right side
    361,815.66x = 67,898,056,515.46
  5. Step 5: Solve for x
    x = 67,898,056,515.46/361,815.66
  6. Step 6: Final answer
    x = 187,659.25

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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.