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Finding the Fourth Proportional to 18,300.96, 27,216 and 17,717.76

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Solution

The fourth proportional to 18,300.96, 27,216 and 17,717.76 is: 26,348.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,300.96 : 27,216 = 17,717.76 : x
  2. Step 2: Convert to fraction form
    18,300.96/27,216 = 17,717.76/x
  3. Step 3: Cross multiply
    18,300.96x = 27,216 × 17,717.76
  4. Step 4: Simplify right side
    18,300.96x = 482,206,556.16
  5. Step 5: Solve for x
    x = 482,206,556.16/18,300.96
  6. Step 6: Final answer
    x = 26,348.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.