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Finding the Fourth Proportional to 19,416.67, 26,794.76 and 10,920.20

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Solution

The fourth proportional to 19,416.67, 26,794.76 and 10,920.20 is: 15,069.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,416.67 : 26,794.76 = 10,920.20 : x
  2. Step 2: Convert to fraction form
    19,416.67/26,794.76 = 10,920.20/x
  3. Step 3: Cross multiply
    19,416.67x = 26,794.76 × 10,920.20
  4. Step 4: Simplify right side
    19,416.67x = 292,603,949.58
  5. Step 5: Solve for x
    x = 292,603,949.58/19,416.67
  6. Step 6: Final answer
    x = 15,069.73

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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.