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Finding the Fourth Proportional to 124,854.62, 187,124.28 and 79,858.91

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Solution

The fourth proportional to 124,854.62, 187,124.28 and 79,858.91 is: 119,687.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,854.62 : 187,124.28 = 79,858.91 : x
  2. Step 2: Convert to fraction form
    124,854.62/187,124.28 = 79,858.91/x
  3. Step 3: Cross multiply
    124,854.62x = 187,124.28 × 79,858.91
  4. Step 4: Simplify right side
    124,854.62x = 14,943,541,203.67
  5. Step 5: Solve for x
    x = 14,943,541,203.67/124,854.62
  6. Step 6: Final answer
    x = 119,687.54

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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.