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Finding the Fourth Proportional to 79,257.74, 109,386.84 and 49,052.74

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Solution

The fourth proportional to 79,257.74, 109,386.84 and 49,052.74 is: 67,699.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,257.74 : 109,386.84 = 49,052.74 : x
  2. Step 2: Convert to fraction form
    79,257.74/109,386.84 = 49,052.74/x
  3. Step 3: Cross multiply
    79,257.74x = 109,386.84 × 49,052.74
  4. Step 4: Simplify right side
    79,257.74x = 5,365,724,221.94
  5. Step 5: Solve for x
    x = 5,365,724,221.94/79,257.74
  6. Step 6: Final answer
    x = 67,699.69

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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.