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Finding the Fourth Proportional to 11,892.57, 17,838.86 and 3,572.57

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Solution

The fourth proportional to 11,892.57, 17,838.86 and 3,572.57 is: 5,358.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,892.57 : 17,838.86 = 3,572.57 : x
  2. Step 2: Convert to fraction form
    11,892.57/17,838.86 = 3,572.57/x
  3. Step 3: Cross multiply
    11,892.57x = 17,838.86 × 3,572.57
  4. Step 4: Simplify right side
    11,892.57x = 63,730,469.01
  5. Step 5: Solve for x
    x = 63,730,469.01/11,892.57
  6. Step 6: Final answer
    x = 5,358.85

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1.5x scale

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.