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Finding the Fourth Proportional to 7,791.81, 10,752.58 and 4,255.01

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Solution

The fourth proportional to 7,791.81, 10,752.58 and 4,255.01 is: 5,871.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.81 : 10,752.58 = 4,255.01 : x
  2. Step 2: Convert to fraction form
    7,791.81/10,752.58 = 4,255.01/x
  3. Step 3: Cross multiply
    7,791.81x = 10,752.58 × 4,255.01
  4. Step 4: Simplify right side
    7,791.81x = 45,752,335.43
  5. Step 5: Solve for x
    x = 45,752,335.43/7,791.81
  6. Step 6: Final answer
    x = 5,871.85

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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.