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Finding the Fourth Proportional to 81,794.28, 122,691.36 and 26,390.28

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Solution

The fourth proportional to 81,794.28, 122,691.36 and 26,390.28 is: 39,585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,794.28 : 122,691.36 = 26,390.28 : x
  2. Step 2: Convert to fraction form
    81,794.28/122,691.36 = 26,390.28/x
  3. Step 3: Cross multiply
    81,794.28x = 122,691.36 × 26,390.28
  4. Step 4: Simplify right side
    81,794.28x = 3,237,859,343.98
  5. Step 5: Solve for x
    x = 3,237,859,343.98/81,794.28
  6. Step 6: Final answer
    x = 39,585.40

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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.