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Finding the Fourth Proportional to 79,660.16, 109,931 and 43,850

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Solution

The fourth proportional to 79,660.16, 109,931 and 43,850 is: 60,512.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,660.16 : 109,931 = 43,850 : x
  2. Step 2: Convert to fraction form
    79,660.16/109,931 = 43,850/x
  3. Step 3: Cross multiply
    79,660.16x = 109,931 × 43,850
  4. Step 4: Simplify right side
    79,660.16x = 4,820,474,350
  5. Step 5: Solve for x
    x = 4,820,474,350/79,660.16
  6. Step 6: Final answer
    x = 60,512.99

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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.