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Finding the Fourth Proportional to 79,138.16, 118,707.24 and 32,372

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Solution

The fourth proportional to 79,138.16, 118,707.24 and 32,372 is: 48,558

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,138.16 : 118,707.24 = 32,372 : x
  2. Step 2: Convert to fraction form
    79,138.16/118,707.24 = 32,372/x
  3. Step 3: Cross multiply
    79,138.16x = 118,707.24 × 32,372
  4. Step 4: Simplify right side
    79,138.16x = 3,842,790,773.28
  5. Step 5: Solve for x
    x = 3,842,790,773.28/79,138.16
  6. Step 6: Final answer
    x = 48,558

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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.