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Finding the Fourth Proportional to 168,627.78, 232,626.78 and 100,605.84

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Solution

The fourth proportional to 168,627.78, 232,626.78 and 100,605.84 is: 138,788.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,627.78 : 232,626.78 = 100,605.84 : x
  2. Step 2: Convert to fraction form
    168,627.78/232,626.78 = 100,605.84/x
  3. Step 3: Cross multiply
    168,627.78x = 232,626.78 × 100,605.84
  4. Step 4: Simplify right side
    168,627.78x = 23,403,612,608.40
  5. Step 5: Solve for x
    x = 23,403,612,608.40/168,627.78
  6. Step 6: Final answer
    x = 138,788.59

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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.