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Finding the Fourth Proportional to 19,207.80, 26,506.80 and 11,248.44

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Solution

The fourth proportional to 19,207.80, 26,506.80 and 11,248.44 is: 15,522.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,207.80 : 26,506.80 = 11,248.44 : x
  2. Step 2: Convert to fraction form
    19,207.80/26,506.80 = 11,248.44/x
  3. Step 3: Cross multiply
    19,207.80x = 26,506.80 × 11,248.44
  4. Step 4: Simplify right side
    19,207.80x = 298,160,149.39
  5. Step 5: Solve for x
    x = 298,160,149.39/19,207.80
  6. Step 6: Final answer
    x = 15,522.87

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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.