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Finding the Fourth Proportional to 18,956.13, 26,151 and 10,993.74

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Solution

The fourth proportional to 18,956.13, 26,151 and 10,993.74 is: 15,166.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,956.13 : 26,151 = 10,993.74 : x
  2. Step 2: Convert to fraction form
    18,956.13/26,151 = 10,993.74/x
  3. Step 3: Cross multiply
    18,956.13x = 26,151 × 10,993.74
  4. Step 4: Simplify right side
    18,956.13x = 287,497,294.74
  5. Step 5: Solve for x
    x = 287,497,294.74/18,956.13
  6. Step 6: Final answer
    x = 15,166.46

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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.