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Finding the Fourth Proportional to 68,954.70, 103,432.05 and 48,834.30

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Solution

The fourth proportional to 68,954.70, 103,432.05 and 48,834.30 is: 73,251.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,954.70 : 103,432.05 = 48,834.30 : x
  2. Step 2: Convert to fraction form
    68,954.70/103,432.05 = 48,834.30/x
  3. Step 3: Cross multiply
    68,954.70x = 103,432.05 × 48,834.30
  4. Step 4: Simplify right side
    68,954.70x = 5,051,031,759.32
  5. Step 5: Solve for x
    x = 5,051,031,759.32/68,954.70
  6. Step 6: Final answer
    x = 73,251.45

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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.