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Finding the Fourth Proportional to 79,569.42, 109,803.60 and 43,759.43

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Solution

The fourth proportional to 79,569.42, 109,803.60 and 43,759.43 is: 60,386.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,569.42 : 109,803.60 = 43,759.43 : x
  2. Step 2: Convert to fraction form
    79,569.42/109,803.60 = 43,759.43/x
  3. Step 3: Cross multiply
    79,569.42x = 109,803.60 × 43,759.43
  4. Step 4: Simplify right side
    79,569.42x = 4,804,942,398.93
  5. Step 5: Solve for x
    x = 4,804,942,398.93/79,569.42
  6. Step 6: Final answer
    x = 60,386.80

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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.