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Finding the Fourth Proportional to 5,608.31, 7,739.63 and 3,124.47

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Solution

The fourth proportional to 5,608.31, 7,739.63 and 3,124.47 is: 4,311.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,608.31 : 7,739.63 = 3,124.47 : x
  2. Step 2: Convert to fraction form
    5,608.31/7,739.63 = 3,124.47/x
  3. Step 3: Cross multiply
    5,608.31x = 7,739.63 × 3,124.47
  4. Step 4: Simplify right side
    5,608.31x = 24,182,265.00
  5. Step 5: Solve for x
    x = 24,182,265.00/5,608.31
  6. Step 6: Final answer
    x = 4,311.86

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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.