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Finding the Fourth Proportional to 8,796.97, 12,139.49 and 4,818.11

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Solution

The fourth proportional to 8,796.97, 12,139.49 and 4,818.11 is: 6,648.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,796.97 : 12,139.49 = 4,818.11 : x
  2. Step 2: Convert to fraction form
    8,796.97/12,139.49 = 4,818.11/x
  3. Step 3: Cross multiply
    8,796.97x = 12,139.49 × 4,818.11
  4. Step 4: Simplify right side
    8,796.97x = 58,489,374.07
  5. Step 5: Solve for x
    x = 58,489,374.07/8,796.97
  6. Step 6: Final answer
    x = 6,648.81

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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.