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Finding the Fourth Proportional to 48,711.20, 73,066.80 and 45,795.20

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Solution

The fourth proportional to 48,711.20, 73,066.80 and 45,795.20 is: 68,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,711.20 : 73,066.80 = 45,795.20 : x
  2. Step 2: Convert to fraction form
    48,711.20/73,066.80 = 45,795.20/x
  3. Step 3: Cross multiply
    48,711.20x = 73,066.80 × 45,795.20
  4. Step 4: Simplify right side
    48,711.20x = 3,346,108,719.36
  5. Step 5: Solve for x
    x = 3,346,108,719.36/48,711.20
  6. Step 6: Final answer
    x = 68,692.80

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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.