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Finding the Fourth Proportional to 125,042.46, 187,506.96 and 53,931.49

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Solution

The fourth proportional to 125,042.46, 187,506.96 and 53,931.49 is: 80,872.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,042.46 : 187,506.96 = 53,931.49 : x
  2. Step 2: Convert to fraction form
    125,042.46/187,506.96 = 53,931.49/x
  3. Step 3: Cross multiply
    125,042.46x = 187,506.96 × 53,931.49
  4. Step 4: Simplify right side
    125,042.46x = 10,112,529,770.31
  5. Step 5: Solve for x
    x = 10,112,529,770.31/125,042.46
  6. Step 6: Final answer
    x = 80,872.77

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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.