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Finding the Fourth Proportional to 79,569.68, 109,803.96 and 43,759.69

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Solution

The fourth proportional to 79,569.68, 109,803.96 and 43,759.69 is: 60,387.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,569.68 : 109,803.96 = 43,759.69 : x
  2. Step 2: Convert to fraction form
    79,569.68/109,803.96 = 43,759.69/x
  3. Step 3: Cross multiply
    79,569.68x = 109,803.96 × 43,759.69
  4. Step 4: Simplify right side
    79,569.68x = 4,804,986,975.86
  5. Step 5: Solve for x
    x = 4,804,986,975.86/79,569.68
  6. Step 6: Final answer
    x = 60,387.16

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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.