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Finding the Fourth Proportional to 47,391.52, 71,060.12 and 38,048.78

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Solution

The fourth proportional to 47,391.52, 71,060.12 and 38,048.78 is: 57,051.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,391.52 : 71,060.12 = 38,048.78 : x
  2. Step 2: Convert to fraction form
    47,391.52/71,060.12 = 38,048.78/x
  3. Step 3: Cross multiply
    47,391.52x = 71,060.12 × 38,048.78
  4. Step 4: Simplify right side
    47,391.52x = 2,703,750,872.65
  5. Step 5: Solve for x
    x = 2,703,750,872.65/47,391.52
  6. Step 6: Final answer
    x = 57,051.36

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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.