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Finding the Fourth Proportional to 73,512.84, 110,252.70 and 20,921.16

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Solution

The fourth proportional to 73,512.84, 110,252.70 and 20,921.16 is: 31,377.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,512.84 : 110,252.70 = 20,921.16 : x
  2. Step 2: Convert to fraction form
    73,512.84/110,252.70 = 20,921.16/x
  3. Step 3: Cross multiply
    73,512.84x = 110,252.70 × 20,921.16
  4. Step 4: Simplify right side
    73,512.84x = 2,306,614,377.13
  5. Step 5: Solve for x
    x = 2,306,614,377.13/73,512.84
  6. Step 6: Final answer
    x = 31,377.03

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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.