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Finding the Fourth Proportional to 79,569.74, 109,803.72 and 43,759.64

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Solution

The fourth proportional to 79,569.74, 109,803.72 and 43,759.64 is: 60,386.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,569.74 : 109,803.72 = 43,759.64 : x
  2. Step 2: Convert to fraction form
    79,569.74/109,803.72 = 43,759.64/x
  3. Step 3: Cross multiply
    79,569.74x = 109,803.72 × 43,759.64
  4. Step 4: Simplify right side
    79,569.74x = 4,804,971,257.86
  5. Step 5: Solve for x
    x = 4,804,971,257.86/79,569.74
  6. Step 6: Final answer
    x = 60,386.92

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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.