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Finding the Fourth Proportional to 67,897.60, 101,923.20 and 40,211.20

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Solution

The fourth proportional to 67,897.60, 101,923.20 and 40,211.20 is: 60,362.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,897.60 : 101,923.20 = 40,211.20 : x
  2. Step 2: Convert to fraction form
    67,897.60/101,923.20 = 40,211.20/x
  3. Step 3: Cross multiply
    67,897.60x = 101,923.20 × 40,211.20
  4. Step 4: Simplify right side
    67,897.60x = 4,098,454,179.84
  5. Step 5: Solve for x
    x = 4,098,454,179.84/67,897.60
  6. Step 6: Final answer
    x = 60,362.28

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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.