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Finding the Fourth Proportional to 7,791.65, 10,752.72 and 4,807.61

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Solution

The fourth proportional to 7,791.65, 10,752.72 and 4,807.61 is: 6,634.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.65 : 10,752.72 = 4,807.61 : x
  2. Step 2: Convert to fraction form
    7,791.65/10,752.72 = 4,807.61/x
  3. Step 3: Cross multiply
    7,791.65x = 10,752.72 × 4,807.61
  4. Step 4: Simplify right side
    7,791.65x = 51,694,884.20
  5. Step 5: Solve for x
    x = 51,694,884.20/7,791.65
  6. Step 6: Final answer
    x = 6,634.65

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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.