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Finding the Fourth Proportional to 48,812.31, 73,229.74 and 20,733.28

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Solution

The fourth proportional to 48,812.31, 73,229.74 and 20,733.28 is: 31,104.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,812.31 : 73,229.74 = 20,733.28 : x
  2. Step 2: Convert to fraction form
    48,812.31/73,229.74 = 20,733.28/x
  3. Step 3: Cross multiply
    48,812.31x = 73,229.74 × 20,733.28
  4. Step 4: Simplify right side
    48,812.31x = 1,518,292,468.84
  5. Step 5: Solve for x
    x = 1,518,292,468.84/48,812.31
  6. Step 6: Final answer
    x = 31,104.70

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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.