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Finding the Fourth Proportional to 79,248.69, 109,364.67 and 43,438.46

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Solution

The fourth proportional to 79,248.69, 109,364.67 and 43,438.46 is: 59,945.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,248.69 : 109,364.67 = 43,438.46 : x
  2. Step 2: Convert to fraction form
    79,248.69/109,364.67 = 43,438.46/x
  3. Step 3: Cross multiply
    79,248.69x = 109,364.67 × 43,438.46
  4. Step 4: Simplify right side
    79,248.69x = 4,750,632,296.38
  5. Step 5: Solve for x
    x = 4,750,632,296.38/79,248.69
  6. Step 6: Final answer
    x = 59,945.88

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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.