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Finding the Fourth Proportional to 26,642.71, 39,955.76 and 9,108.44

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Solution

The fourth proportional to 26,642.71, 39,955.76 and 9,108.44 is: 13,659.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,642.71 : 39,955.76 = 9,108.44 : x
  2. Step 2: Convert to fraction form
    26,642.71/39,955.76 = 9,108.44/x
  3. Step 3: Cross multiply
    26,642.71x = 39,955.76 × 9,108.44
  4. Step 4: Simplify right side
    26,642.71x = 363,934,642.61
  5. Step 5: Solve for x
    x = 363,934,642.61/26,642.71
  6. Step 6: Final answer
    x = 13,659.82

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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.