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Finding the Fourth Proportional to 125,392.15, 187,869.51 and 104,466.61

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Solution

The fourth proportional to 125,392.15, 187,869.51 and 104,466.61 is: 156,517.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,392.15 : 187,869.51 = 104,466.61 : x
  2. Step 2: Convert to fraction form
    125,392.15/187,869.51 = 104,466.61/x
  3. Step 3: Cross multiply
    125,392.15x = 187,869.51 × 104,466.61
  4. Step 4: Simplify right side
    125,392.15x = 19,626,090,832.06
  5. Step 5: Solve for x
    x = 19,626,090,832.06/125,392.15
  6. Step 6: Final answer
    x = 156,517.70

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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.