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Finding the Fourth Proportional to 73,965.20, 110,947.80 and 56,469.20

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Solution

The fourth proportional to 73,965.20, 110,947.80 and 56,469.20 is: 84,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,965.20 : 110,947.80 = 56,469.20 : x
  2. Step 2: Convert to fraction form
    73,965.20/110,947.80 = 56,469.20/x
  3. Step 3: Cross multiply
    73,965.20x = 110,947.80 × 56,469.20
  4. Step 4: Simplify right side
    73,965.20x = 6,265,133,507.76
  5. Step 5: Solve for x
    x = 6,265,133,507.76/73,965.20
  6. Step 6: Final answer
    x = 84,703.80

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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.