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Finding the Fourth Proportional to 72,388.08, 108,524.88 and 47,034

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Solution

The fourth proportional to 72,388.08, 108,524.88 and 47,034 is: 70,513.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,388.08 : 108,524.88 = 47,034 : x
  2. Step 2: Convert to fraction form
    72,388.08/108,524.88 = 47,034/x
  3. Step 3: Cross multiply
    72,388.08x = 108,524.88 × 47,034
  4. Step 4: Simplify right side
    72,388.08x = 5,104,359,205.92
  5. Step 5: Solve for x
    x = 5,104,359,205.92/72,388.08
  6. Step 6: Final answer
    x = 70,513.81

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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.