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Finding the Fourth Proportional to 26,921.70, 40,373.92 and 8,906.58

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Solution

The fourth proportional to 26,921.70, 40,373.92 and 8,906.58 is: 13,357.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,921.70 : 40,373.92 = 8,906.58 : x
  2. Step 2: Convert to fraction form
    26,921.70/40,373.92 = 8,906.58/x
  3. Step 3: Cross multiply
    26,921.70x = 40,373.92 × 8,906.58
  4. Step 4: Simplify right side
    26,921.70x = 359,593,301.99
  5. Step 5: Solve for x
    x = 359,593,301.99/26,921.70
  6. Step 6: Final answer
    x = 13,357.01

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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.