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Finding the Fourth Proportional to 10,612.56, 15,920.60 and 3,593

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Solution

The fourth proportional to 10,612.56, 15,920.60 and 3,593 is: 5,390.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,612.56 : 15,920.60 = 3,593 : x
  2. Step 2: Convert to fraction form
    10,612.56/15,920.60 = 3,593/x
  3. Step 3: Cross multiply
    10,612.56x = 15,920.60 × 3,593
  4. Step 4: Simplify right side
    10,612.56x = 57,202,715.80
  5. Step 5: Solve for x
    x = 57,202,715.80/10,612.56
  6. Step 6: Final answer
    x = 5,390.10

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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.