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Finding the Fourth Proportional to 361,816.66, 542,774.40 and 125,095.78

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Solution

The fourth proportional to 361,816.66, 542,774.40 and 125,095.78 is: 187,660.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,816.66 : 542,774.40 = 125,095.78 : x
  2. Step 2: Convert to fraction form
    361,816.66/542,774.40 = 125,095.78/x
  3. Step 3: Cross multiply
    361,816.66x = 542,774.40 × 125,095.78
  4. Step 4: Simplify right side
    361,816.66x = 67,898,786,932.03
  5. Step 5: Solve for x
    x = 67,898,786,932.03/361,816.66
  6. Step 6: Final answer
    x = 187,660.75

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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.