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Finding the Fourth Proportional to 2,696.72, 3,715.08 and 2,221.52

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Solution

The fourth proportional to 2,696.72, 3,715.08 and 2,221.52 is: 3,060.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,696.72 : 3,715.08 = 2,221.52 : x
  2. Step 2: Convert to fraction form
    2,696.72/3,715.08 = 2,221.52/x
  3. Step 3: Cross multiply
    2,696.72x = 3,715.08 × 2,221.52
  4. Step 4: Simplify right side
    2,696.72x = 8,253,124.52
  5. Step 5: Solve for x
    x = 8,253,124.52/2,696.72
  6. Step 6: Final answer
    x = 3,060.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.