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Finding the Fourth Proportional to 7,791.68, 10,752.53 and 4,254.81

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Solution

The fourth proportional to 7,791.68, 10,752.53 and 4,254.81 is: 5,871.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.68 : 10,752.53 = 4,254.81 : x
  2. Step 2: Convert to fraction form
    7,791.68/10,752.53 = 4,254.81/x
  3. Step 3: Cross multiply
    7,791.68x = 10,752.53 × 4,254.81
  4. Step 4: Simplify right side
    7,791.68x = 45,749,972.17
  5. Step 5: Solve for x
    x = 45,749,972.17/7,791.68
  6. Step 6: Final answer
    x = 5,871.64

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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.