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Finding the Fourth Proportional to 125,363.16, 188,045.15 and 31,868.91

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Solution

The fourth proportional to 125,363.16, 188,045.15 and 31,868.91 is: 47,803.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,363.16 : 188,045.15 = 31,868.91 : x
  2. Step 2: Convert to fraction form
    125,363.16/188,045.15 = 31,868.91/x
  3. Step 3: Cross multiply
    125,363.16x = 188,045.15 × 31,868.91
  4. Step 4: Simplify right side
    125,363.16x = 5,992,793,961.29
  5. Step 5: Solve for x
    x = 5,992,793,961.29/125,363.16
  6. Step 6: Final answer
    x = 47,803.47

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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.