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Finding the Fourth Proportional to 19,543.92, 26,972.04 and 11,160.24

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Solution

The fourth proportional to 19,543.92, 26,972.04 and 11,160.24 is: 15,401.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,543.92 : 26,972.04 = 11,160.24 : x
  2. Step 2: Convert to fraction form
    19,543.92/26,972.04 = 11,160.24/x
  3. Step 3: Cross multiply
    19,543.92x = 26,972.04 × 11,160.24
  4. Step 4: Simplify right side
    19,543.92x = 301,014,439.69
  5. Step 5: Solve for x
    x = 301,014,439.69/19,543.92
  6. Step 6: Final answer
    x = 15,401.95

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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.