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Finding the Fourth Proportional to 73,695.40, 110,429.70 and 54,887.20

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Solution

The fourth proportional to 73,695.40, 110,429.70 and 54,887.20 is: 82,246.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,695.40 : 110,429.70 = 54,887.20 : x
  2. Step 2: Convert to fraction form
    73,695.40/110,429.70 = 54,887.20/x
  3. Step 3: Cross multiply
    73,695.40x = 110,429.70 × 54,887.20
  4. Step 4: Simplify right side
    73,695.40x = 6,061,177,029.84
  5. Step 5: Solve for x
    x = 6,061,177,029.84/73,695.40
  6. Step 6: Final answer
    x = 82,246.34

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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.