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Finding the Fourth Proportional to 218,432.52, 327,692.52 and 68,710.50

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Solution

The fourth proportional to 218,432.52, 327,692.52 and 68,710.50 is: 103,079.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,432.52 : 327,692.52 = 68,710.50 : x
  2. Step 2: Convert to fraction form
    218,432.52/327,692.52 = 68,710.50/x
  3. Step 3: Cross multiply
    218,432.52x = 327,692.52 × 68,710.50
  4. Step 4: Simplify right side
    218,432.52x = 22,515,916,895.46
  5. Step 5: Solve for x
    x = 22,515,916,895.46/218,432.52
  6. Step 6: Final answer
    x = 103,079.51

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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.