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Finding the Fourth Proportional to 73,631.20, 110,461.20 and 29,250.40

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Solution

The fourth proportional to 73,631.20, 110,461.20 and 29,250.40 is: 43,881.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,631.20 : 110,461.20 = 29,250.40 : x
  2. Step 2: Convert to fraction form
    73,631.20/110,461.20 = 29,250.40/x
  3. Step 3: Cross multiply
    73,631.20x = 110,461.20 × 29,250.40
  4. Step 4: Simplify right side
    73,631.20x = 3,231,034,284.48
  5. Step 5: Solve for x
    x = 3,231,034,284.48/73,631.20
  6. Step 6: Final answer
    x = 43,881.32

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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.