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Finding the Fourth Proportional to 34,612.92, 47,769.48 and 21,193.20

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Solution

The fourth proportional to 34,612.92, 47,769.48 and 21,193.20 is: 29,248.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,612.92 : 47,769.48 = 21,193.20 : x
  2. Step 2: Convert to fraction form
    34,612.92/47,769.48 = 21,193.20/x
  3. Step 3: Cross multiply
    34,612.92x = 47,769.48 × 21,193.20
  4. Step 4: Simplify right side
    34,612.92x = 1,012,388,143.54
  5. Step 5: Solve for x
    x = 1,012,388,143.54/34,612.92
  6. Step 6: Final answer
    x = 29,248.85

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.