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Finding the Fourth Proportional to 92,089.71, 138,134.57 and 65,845.71

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Solution

The fourth proportional to 92,089.71, 138,134.57 and 65,845.71 is: 98,768.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,089.71 : 138,134.57 = 65,845.71 : x
  2. Step 2: Convert to fraction form
    92,089.71/138,134.57 = 65,845.71/x
  3. Step 3: Cross multiply
    92,089.71x = 138,134.57 × 65,845.71
  4. Step 4: Simplify right side
    92,089.71x = 9,095,568,507.97
  5. Step 5: Solve for x
    x = 9,095,568,507.97/92,089.71
  6. Step 6: Final answer
    x = 98,768.57

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.