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Finding the Fourth Proportional to 19,508.88, 26,922.60 and 11,012.70

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Solution

The fourth proportional to 19,508.88, 26,922.60 and 11,012.70 is: 15,197.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,508.88 : 26,922.60 = 11,012.70 : x
  2. Step 2: Convert to fraction form
    19,508.88/26,922.60 = 11,012.70/x
  3. Step 3: Cross multiply
    19,508.88x = 26,922.60 × 11,012.70
  4. Step 4: Simplify right side
    19,508.88x = 296,490,517.02
  5. Step 5: Solve for x
    x = 296,490,517.02/19,508.88
  6. Step 6: Final answer
    x = 15,197.72

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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.