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Finding the Fourth Proportional to 79,452.53, 109,641.54 and 43,640.41

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Solution

The fourth proportional to 79,452.53, 109,641.54 and 43,640.41 is: 60,222.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,452.53 : 109,641.54 = 43,640.41 : x
  2. Step 2: Convert to fraction form
    79,452.53/109,641.54 = 43,640.41/x
  3. Step 3: Cross multiply
    79,452.53x = 109,641.54 × 43,640.41
  4. Step 4: Simplify right side
    79,452.53x = 4,784,801,210.42
  5. Step 5: Solve for x
    x = 4,784,801,210.42/79,452.53
  6. Step 6: Final answer
    x = 60,222.14

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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.