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Finding the Fourth Proportional to 71,296.68, 107,138.88 and 38,040.24

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Solution

The fourth proportional to 71,296.68, 107,138.88 and 38,040.24 is: 57,163.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,296.68 : 107,138.88 = 38,040.24 : x
  2. Step 2: Convert to fraction form
    71,296.68/107,138.88 = 38,040.24/x
  3. Step 3: Cross multiply
    71,296.68x = 107,138.88 × 38,040.24
  4. Step 4: Simplify right side
    71,296.68x = 4,075,588,708.53
  5. Step 5: Solve for x
    x = 4,075,588,708.53/71,296.68
  6. Step 6: Final answer
    x = 57,163.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.