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Finding the Fourth Proportional to 79,262.44, 109,286.52 and 68,487.84

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Solution

The fourth proportional to 79,262.44, 109,286.52 and 68,487.84 is: 94,430.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,262.44 : 109,286.52 = 68,487.84 : x
  2. Step 2: Convert to fraction form
    79,262.44/109,286.52 = 68,487.84/x
  3. Step 3: Cross multiply
    79,262.44x = 109,286.52 × 68,487.84
  4. Step 4: Simplify right side
    79,262.44x = 7,484,797,695.92
  5. Step 5: Solve for x
    x = 7,484,797,695.92/79,262.44
  6. Step 6: Final answer
    x = 94,430.57

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1.5x scale

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.