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Finding the Fourth Proportional to 18,893.92, 26,063.76 and 12,177.76

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Solution

The fourth proportional to 18,893.92, 26,063.76 and 12,177.76 is: 16,798.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,893.92 : 26,063.76 = 12,177.76 : x
  2. Step 2: Convert to fraction form
    18,893.92/26,063.76 = 12,177.76/x
  3. Step 3: Cross multiply
    18,893.92x = 26,063.76 × 12,177.76
  4. Step 4: Simplify right side
    18,893.92x = 317,398,213.98
  5. Step 5: Solve for x
    x = 317,398,213.98/18,893.92
  6. Step 6: Final answer
    x = 16,798.96

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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.