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Finding the Fourth Proportional to 103,861.76, 155,734.28 and 43,053.44

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Solution

The fourth proportional to 103,861.76, 155,734.28 and 43,053.44 is: 64,555.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,861.76 : 155,734.28 = 43,053.44 : x
  2. Step 2: Convert to fraction form
    103,861.76/155,734.28 = 43,053.44/x
  3. Step 3: Cross multiply
    103,861.76x = 155,734.28 × 43,053.44
  4. Step 4: Simplify right side
    103,861.76x = 6,704,896,479.92
  5. Step 5: Solve for x
    x = 6,704,896,479.92/103,861.76
  6. Step 6: Final answer
    x = 64,555.97

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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.