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Finding the Fourth Proportional to 48,721.70, 73,111.35 and 35,540.90

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Solution

The fourth proportional to 48,721.70, 73,111.35 and 35,540.90 is: 53,332.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,721.70 : 73,111.35 = 35,540.90 : x
  2. Step 2: Convert to fraction form
    48,721.70/73,111.35 = 35,540.90/x
  3. Step 3: Cross multiply
    48,721.70x = 73,111.35 × 35,540.90
  4. Step 4: Simplify right side
    48,721.70x = 2,598,443,179.22
  5. Step 5: Solve for x
    x = 2,598,443,179.22/48,721.70
  6. Step 6: Final answer
    x = 53,332.36

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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.