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Finding the Fourth Proportional to 74,560.80, 111,808.80 and 24,621.60

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Solution

The fourth proportional to 74,560.80, 111,808.80 and 24,621.60 is: 36,921.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,560.80 : 111,808.80 = 24,621.60 : x
  2. Step 2: Convert to fraction form
    74,560.80/111,808.80 = 24,621.60/x
  3. Step 3: Cross multiply
    74,560.80x = 111,808.80 × 24,621.60
  4. Step 4: Simplify right side
    74,560.80x = 2,752,911,550.08
  5. Step 5: Solve for x
    x = 2,752,911,550.08/74,560.80
  6. Step 6: Final answer
    x = 36,921.70

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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.