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Finding the Fourth Proportional to 125,699.62, 188,376.06 and 92,437.78

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Solution

The fourth proportional to 125,699.62, 188,376.06 and 92,437.78 is: 138,529.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,699.62 : 188,376.06 = 92,437.78 : x
  2. Step 2: Convert to fraction form
    125,699.62/188,376.06 = 92,437.78/x
  3. Step 3: Cross multiply
    125,699.62x = 188,376.06 × 92,437.78
  4. Step 4: Simplify right side
    125,699.62x = 17,413,064,791.55
  5. Step 5: Solve for x
    x = 17,413,064,791.55/125,699.62
  6. Step 6: Final answer
    x = 138,529.18

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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.