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Finding the Fourth Proportional to 47,299.20, 70,948.80 and 38,842.80

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Solution

The fourth proportional to 47,299.20, 70,948.80 and 38,842.80 is: 58,264.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,299.20 : 70,948.80 = 38,842.80 : x
  2. Step 2: Convert to fraction form
    47,299.20/70,948.80 = 38,842.80/x
  3. Step 3: Cross multiply
    47,299.20x = 70,948.80 × 38,842.80
  4. Step 4: Simplify right side
    47,299.20x = 2,755,850,048.64
  5. Step 5: Solve for x
    x = 2,755,850,048.64/47,299.20
  6. Step 6: Final answer
    x = 58,264.20

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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.