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Finding the Fourth Proportional to 168,995.44, 232,965.30 and 128,638.90

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Solution

The fourth proportional to 168,995.44, 232,965.30 and 128,638.90 is: 177,332.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,995.44 : 232,965.30 = 128,638.90 : x
  2. Step 2: Convert to fraction form
    168,995.44/232,965.30 = 128,638.90/x
  3. Step 3: Cross multiply
    168,995.44x = 232,965.30 × 128,638.90
  4. Step 4: Simplify right side
    168,995.44x = 29,968,399,930.17
  5. Step 5: Solve for x
    x = 29,968,399,930.17/168,995.44
  6. Step 6: Final answer
    x = 177,332.60

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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.