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Finding the Fourth Proportional to 187,818.74, 259,189.36 and 101,780.11

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Solution

The fourth proportional to 187,818.74, 259,189.36 and 101,780.11 is: 140,456.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,818.74 : 259,189.36 = 101,780.11 : x
  2. Step 2: Convert to fraction form
    187,818.74/259,189.36 = 101,780.11/x
  3. Step 3: Cross multiply
    187,818.74x = 259,189.36 × 101,780.11
  4. Step 4: Simplify right side
    187,818.74x = 26,380,321,571.63
  5. Step 5: Solve for x
    x = 26,380,321,571.63/187,818.74
  6. Step 6: Final answer
    x = 140,456.28

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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.