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Finding the Fourth Proportional to 125,363.66, 188,045.90 and 31,869.41

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Solution

The fourth proportional to 125,363.66, 188,045.90 and 31,869.41 is: 47,804.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,363.66 : 188,045.90 = 31,869.41 : x
  2. Step 2: Convert to fraction form
    125,363.66/188,045.90 = 31,869.41/x
  3. Step 3: Cross multiply
    125,363.66x = 188,045.90 × 31,869.41
  4. Step 4: Simplify right side
    125,363.66x = 5,992,910,786.34
  5. Step 5: Solve for x
    x = 5,992,910,786.34/125,363.66
  6. Step 6: Final answer
    x = 47,804.21

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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.