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Finding the Fourth Proportional to 8,713.31, 12,022.45 and 4,936.15

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Solution

The fourth proportional to 8,713.31, 12,022.45 and 4,936.15 is: 6,810.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,713.31 : 12,022.45 = 4,936.15 : x
  2. Step 2: Convert to fraction form
    8,713.31/12,022.45 = 4,936.15/x
  3. Step 3: Cross multiply
    8,713.31x = 12,022.45 × 4,936.15
  4. Step 4: Simplify right side
    8,713.31x = 59,344,574.17
  5. Step 5: Solve for x
    x = 59,344,574.17/8,713.31
  6. Step 6: Final answer
    x = 6,810.79

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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.