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Finding the Fourth Proportional to 54,752.90, 82,129.48 and 15,309.95

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Solution

The fourth proportional to 54,752.90, 82,129.48 and 15,309.95 is: 22,964.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,752.90 : 82,129.48 = 15,309.95 : x
  2. Step 2: Convert to fraction form
    54,752.90/82,129.48 = 15,309.95/x
  3. Step 3: Cross multiply
    54,752.90x = 82,129.48 × 15,309.95
  4. Step 4: Simplify right side
    54,752.90x = 1,257,397,783.40
  5. Step 5: Solve for x
    x = 1,257,397,783.40/54,752.90
  6. Step 6: Final answer
    x = 22,964.96

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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.