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Finding the Fourth Proportional to 125,357.66, 188,036.89 and 31,863.41

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Solution

The fourth proportional to 125,357.66, 188,036.89 and 31,863.41 is: 47,795.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,357.66 : 188,036.89 = 31,863.41 : x
  2. Step 2: Convert to fraction form
    125,357.66/188,036.89 = 31,863.41/x
  3. Step 3: Cross multiply
    125,357.66x = 188,036.89 × 31,863.41
  4. Step 4: Simplify right side
    125,357.66x = 5,991,495,501.35
  5. Step 5: Solve for x
    x = 5,991,495,501.35/125,357.66
  6. Step 6: Final answer
    x = 47,795.21

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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.