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Finding the Fourth Proportional to 361,913.61, 542,953.82 and 125,256.30

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Solution

The fourth proportional to 361,913.61, 542,953.82 and 125,256.30 is: 187,913.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,913.61 : 542,953.82 = 125,256.30 : x
  2. Step 2: Convert to fraction form
    361,913.61/542,953.82 = 125,256.30/x
  3. Step 3: Cross multiply
    361,913.61x = 542,953.82 × 125,256.30
  4. Step 4: Simplify right side
    361,913.61x = 68,008,384,136.56
  5. Step 5: Solve for x
    x = 68,008,384,136.56/361,913.61
  6. Step 6: Final answer
    x = 187,913.31

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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.