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Finding the Fourth Proportional to 68,853.38, 95,019.55 and 38,640.55

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Solution

The fourth proportional to 68,853.38, 95,019.55 and 38,640.55 is: 53,325.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,853.38 : 95,019.55 = 38,640.55 : x
  2. Step 2: Convert to fraction form
    68,853.38/95,019.55 = 38,640.55/x
  3. Step 3: Cross multiply
    68,853.38x = 95,019.55 × 38,640.55
  4. Step 4: Simplify right side
    68,853.38x = 3,671,607,672.75
  5. Step 5: Solve for x
    x = 3,671,607,672.75/68,853.38
  6. Step 6: Final answer
    x = 53,325.02

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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.