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Finding the Fourth Proportional to 92,578.76, 127,663.14 and 79,194.32

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Solution

The fourth proportional to 92,578.76, 127,663.14 and 79,194.32 is: 109,206.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,578.76 : 127,663.14 = 79,194.32 : x
  2. Step 2: Convert to fraction form
    92,578.76/127,663.14 = 79,194.32/x
  3. Step 3: Cross multiply
    92,578.76x = 127,663.14 × 79,194.32
  4. Step 4: Simplify right side
    92,578.76x = 10,110,195,561.36
  5. Step 5: Solve for x
    x = 10,110,195,561.36/92,578.76
  6. Step 6: Final answer
    x = 109,206.43

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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.