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Finding the Fourth Proportional to 7,763.28, 10,715.67 and 7,366.47

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Solution

The fourth proportional to 7,763.28, 10,715.67 and 7,366.47 is: 10,167.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,763.28 : 10,715.67 = 7,366.47 : x
  2. Step 2: Convert to fraction form
    7,763.28/10,715.67 = 7,366.47/x
  3. Step 3: Cross multiply
    7,763.28x = 10,715.67 × 7,366.47
  4. Step 4: Simplify right side
    7,763.28x = 78,936,661.58
  5. Step 5: Solve for x
    x = 78,936,661.58/7,763.28
  6. Step 6: Final answer
    x = 10,167.95

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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.