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Finding the Fourth Proportional to 29,788.80, 41,105.97 and 17,039.40

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Solution

The fourth proportional to 29,788.80, 41,105.97 and 17,039.40 is: 23,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,788.80 : 41,105.97 = 17,039.40 : x
  2. Step 2: Convert to fraction form
    29,788.80/41,105.97 = 17,039.40/x
  3. Step 3: Cross multiply
    29,788.80x = 41,105.97 × 17,039.40
  4. Step 4: Simplify right side
    29,788.80x = 700,421,065.22
  5. Step 5: Solve for x
    x = 700,421,065.22/29,788.80
  6. Step 6: Final answer
    x = 23,512.90

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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.