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Finding the Fourth Proportional to 18,886.84, 26,065.19 and 11,332.98

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Solution

The fourth proportional to 18,886.84, 26,065.19 and 11,332.98 is: 15,640.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.84 : 26,065.19 = 11,332.98 : x
  2. Step 2: Convert to fraction form
    18,886.84/26,065.19 = 11,332.98/x
  3. Step 3: Cross multiply
    18,886.84x = 26,065.19 × 11,332.98
  4. Step 4: Simplify right side
    18,886.84x = 295,396,305.30
  5. Step 5: Solve for x
    x = 295,396,305.30/18,886.84
  6. Step 6: Final answer
    x = 15,640.33

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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.