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Finding the Fourth Proportional to 125,730.16, 188,719.20 and 92,356.56

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Solution

The fourth proportional to 125,730.16, 188,719.20 and 92,356.56 is: 138,625.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,730.16 : 188,719.20 = 92,356.56 : x
  2. Step 2: Convert to fraction form
    125,730.16/188,719.20 = 92,356.56/x
  3. Step 3: Cross multiply
    125,730.16x = 188,719.20 × 92,356.56
  4. Step 4: Simplify right side
    125,730.16x = 17,429,456,117.95
  5. Step 5: Solve for x
    x = 17,429,456,117.95/125,730.16
  6. Step 6: Final answer
    x = 138,625.90

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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.