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Finding the Fourth Proportional to 7,963.68, 10,988.55 and 4,426.41

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Solution

The fourth proportional to 7,963.68, 10,988.55 and 4,426.41 is: 6,107.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,963.68 : 10,988.55 = 4,426.41 : x
  2. Step 2: Convert to fraction form
    7,963.68/10,988.55 = 4,426.41/x
  3. Step 3: Cross multiply
    7,963.68x = 10,988.55 × 4,426.41
  4. Step 4: Simplify right side
    7,963.68x = 48,639,827.61
  5. Step 5: Solve for x
    x = 48,639,827.61/7,963.68
  6. Step 6: Final answer
    x = 6,107.71

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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.