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Finding the Fourth Proportional to 92,589.76, 127,738.62 and 68,448.68

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Solution

The fourth proportional to 92,589.76, 127,738.62 and 68,448.68 is: 94,433.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,589.76 : 127,738.62 = 68,448.68 : x
  2. Step 2: Convert to fraction form
    92,589.76/127,738.62 = 68,448.68/x
  3. Step 3: Cross multiply
    92,589.76x = 127,738.62 × 68,448.68
  4. Step 4: Simplify right side
    92,589.76x = 8,743,539,924.02
  5. Step 5: Solve for x
    x = 8,743,539,924.02/92,589.76
  6. Step 6: Final answer
    x = 94,433.12

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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.