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Finding the Fourth Proportional to 18,897.92, 26,079.20 and 10,514.56

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Solution

The fourth proportional to 18,897.92, 26,079.20 and 10,514.56 is: 14,510.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.92 : 26,079.20 = 10,514.56 : x
  2. Step 2: Convert to fraction form
    18,897.92/26,079.20 = 10,514.56/x
  3. Step 3: Cross multiply
    18,897.92x = 26,079.20 × 10,514.56
  4. Step 4: Simplify right side
    18,897.92x = 274,211,313.15
  5. Step 5: Solve for x
    x = 274,211,313.15/18,897.92
  6. Step 6: Final answer
    x = 14,510.13

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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.