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Finding the Fourth Proportional to 5,615.68, 7,745.16 and 3,844.48

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Solution

The fourth proportional to 5,615.68, 7,745.16 and 3,844.48 is: 5,302.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.68 : 7,745.16 = 3,844.48 : x
  2. Step 2: Convert to fraction form
    5,615.68/7,745.16 = 3,844.48/x
  3. Step 3: Cross multiply
    5,615.68x = 7,745.16 × 3,844.48
  4. Step 4: Simplify right side
    5,615.68x = 29,776,112.72
  5. Step 5: Solve for x
    x = 29,776,112.72/5,615.68
  6. Step 6: Final answer
    x = 5,302.32

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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.