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Finding the Fourth Proportional to 188,207.75, 259,703.52 and 111,728.36

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Solution

The fourth proportional to 188,207.75, 259,703.52 and 111,728.36 is: 154,171.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,207.75 : 259,703.52 = 111,728.36 : x
  2. Step 2: Convert to fraction form
    188,207.75/259,703.52 = 111,728.36/x
  3. Step 3: Cross multiply
    188,207.75x = 259,703.52 × 111,728.36
  4. Step 4: Simplify right side
    188,207.75x = 29,016,248,606.10
  5. Step 5: Solve for x
    x = 29,016,248,606.10/188,207.75
  6. Step 6: Final answer
    x = 154,171.38

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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.