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Finding the Fourth Proportional to 67,763.04, 101,626.20 and 28,311.90

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Solution

The fourth proportional to 67,763.04, 101,626.20 and 28,311.90 is: 42,460.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,763.04 : 101,626.20 = 28,311.90 : x
  2. Step 2: Convert to fraction form
    67,763.04/101,626.20 = 28,311.90/x
  3. Step 3: Cross multiply
    67,763.04x = 101,626.20 × 28,311.90
  4. Step 4: Simplify right side
    67,763.04x = 2,877,230,811.78
  5. Step 5: Solve for x
    x = 2,877,230,811.78/67,763.04
  6. Step 6: Final answer
    x = 42,460.18

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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.