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Finding the Fourth Proportional to 2,693.92, 3,718.22 and 1,575.40

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Solution

The fourth proportional to 2,693.92, 3,718.22 and 1,575.40 is: 2,174.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,693.92 : 3,718.22 = 1,575.40 : x
  2. Step 2: Convert to fraction form
    2,693.92/3,718.22 = 1,575.40/x
  3. Step 3: Cross multiply
    2,693.92x = 3,718.22 × 1,575.40
  4. Step 4: Simplify right side
    2,693.92x = 5,857,683.79
  5. Step 5: Solve for x
    x = 5,857,683.79/2,693.92
  6. Step 6: Final answer
    x = 2,174.41

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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.