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Finding the Fourth Proportional to 168,628.78, 232,628.16 and 100,606.84

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Solution

The fourth proportional to 168,628.78, 232,628.16 and 100,606.84 is: 138,789.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,628.78 : 232,628.16 = 100,606.84 : x
  2. Step 2: Convert to fraction form
    168,628.78/232,628.16 = 100,606.84/x
  3. Step 3: Cross multiply
    168,628.78x = 232,628.16 × 100,606.84
  4. Step 4: Simplify right side
    168,628.78x = 23,403,984,072.61
  5. Step 5: Solve for x
    x = 23,403,984,072.61/168,628.78
  6. Step 6: Final answer
    x = 138,789.97

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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.