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Finding the Fourth Proportional to 18,901.71, 26,092.44 and 13,454.33

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Solution

The fourth proportional to 18,901.71, 26,092.44 and 13,454.33 is: 18,572.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901.71 : 26,092.44 = 13,454.33 : x
  2. Step 2: Convert to fraction form
    18,901.71/26,092.44 = 13,454.33/x
  3. Step 3: Cross multiply
    18,901.71x = 26,092.44 × 13,454.33
  4. Step 4: Simplify right side
    18,901.71x = 351,056,167.80
  5. Step 5: Solve for x
    x = 351,056,167.80/18,901.71
  6. Step 6: Final answer
    x = 18,572.72

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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.