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Finding the Fourth Proportional to 187,888.32, 259,274.90 and 111,414.78

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Solution

The fourth proportional to 187,888.32, 259,274.90 and 111,414.78 is: 153,745.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,888.32 : 259,274.90 = 111,414.78 : x
  2. Step 2: Convert to fraction form
    187,888.32/259,274.90 = 111,414.78/x
  3. Step 3: Cross multiply
    187,888.32x = 259,274.90 × 111,414.78
  4. Step 4: Simplify right side
    187,888.32x = 28,887,055,385.95
  5. Step 5: Solve for x
    x = 28,887,055,385.95/187,888.32
  6. Step 6: Final answer
    x = 153,745.88

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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.