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Finding the Fourth Proportional to 74,469.20, 111,703.80 and 44,871.80

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Solution

The fourth proportional to 74,469.20, 111,703.80 and 44,871.80 is: 67,307.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,469.20 : 111,703.80 = 44,871.80 : x
  2. Step 2: Convert to fraction form
    74,469.20/111,703.80 = 44,871.80/x
  3. Step 3: Cross multiply
    74,469.20x = 111,703.80 × 44,871.80
  4. Step 4: Simplify right side
    74,469.20x = 5,012,350,572.84
  5. Step 5: Solve for x
    x = 5,012,350,572.84/74,469.20
  6. Step 6: Final answer
    x = 67,307.70

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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.