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Finding the Fourth Proportional to 48,660.80, 72,991.20 and 48,004.70

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Solution

The fourth proportional to 48,660.80, 72,991.20 and 48,004.70 is: 72,007.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,660.80 : 72,991.20 = 48,004.70 : x
  2. Step 2: Convert to fraction form
    48,660.80/72,991.20 = 48,004.70/x
  3. Step 3: Cross multiply
    48,660.80x = 72,991.20 × 48,004.70
  4. Step 4: Simplify right side
    48,660.80x = 3,503,920,658.64
  5. Step 5: Solve for x
    x = 3,503,920,658.64/48,660.80
  6. Step 6: Final answer
    x = 72,007.05

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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.