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Finding the Fourth Proportional to 25,398.36, 38,155.94 and 17,919.13

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Solution

The fourth proportional to 25,398.36, 38,155.94 and 17,919.13 is: 26,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,398.36 : 38,155.94 = 17,919.13 : x
  2. Step 2: Convert to fraction form
    25,398.36/38,155.94 = 17,919.13/x
  3. Step 3: Cross multiply
    25,398.36x = 38,155.94 × 17,919.13
  4. Step 4: Simplify right side
    25,398.36x = 683,721,249.13
  5. Step 5: Solve for x
    x = 683,721,249.13/25,398.36
  6. Step 6: Final answer
    x = 26,919.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.