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Finding the Fourth Proportional to 98,247.39, 135,582.14 and 54,640.55

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Solution

The fourth proportional to 98,247.39, 135,582.14 and 54,640.55 is: 75,404.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,247.39 : 135,582.14 = 54,640.55 : x
  2. Step 2: Convert to fraction form
    98,247.39/135,582.14 = 54,640.55/x
  3. Step 3: Cross multiply
    98,247.39x = 135,582.14 × 54,640.55
  4. Step 4: Simplify right side
    98,247.39x = 7,408,282,021.87
  5. Step 5: Solve for x
    x = 7,408,282,021.87/98,247.39
  6. Step 6: Final answer
    x = 75,404.37

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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.