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Finding the Fourth Proportional to 72,515.52, 108,669.60 and 41,286.24

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Solution

The fourth proportional to 72,515.52, 108,669.60 and 41,286.24 is: 61,870.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,515.52 : 108,669.60 = 41,286.24 : x
  2. Step 2: Convert to fraction form
    72,515.52/108,669.60 = 41,286.24/x
  3. Step 3: Cross multiply
    72,515.52x = 108,669.60 × 41,286.24
  4. Step 4: Simplify right side
    72,515.52x = 4,486,559,186.30
  5. Step 5: Solve for x
    x = 4,486,559,186.30/72,515.52
  6. Step 6: Final answer
    x = 61,870.33

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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.