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Finding the Fourth Proportional to 55,276.68, 82,915.56 and 13,723.68

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Solution

The fourth proportional to 55,276.68, 82,915.56 and 13,723.68 is: 20,585.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,276.68 : 82,915.56 = 13,723.68 : x
  2. Step 2: Convert to fraction form
    55,276.68/82,915.56 = 13,723.68/x
  3. Step 3: Cross multiply
    55,276.68x = 82,915.56 × 13,723.68
  4. Step 4: Simplify right side
    55,276.68x = 1,137,906,612.46
  5. Step 5: Solve for x
    x = 1,137,906,612.46/55,276.68
  6. Step 6: Final answer
    x = 20,585.65

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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.