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Finding the Fourth Proportional to 136,449.51, 186,936.51 and 131,335.98

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Solution

The fourth proportional to 136,449.51, 186,936.51 and 131,335.98 is: 179,930.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,449.51 : 186,936.51 = 131,335.98 : x
  2. Step 2: Convert to fraction form
    136,449.51/186,936.51 = 131,335.98/x
  3. Step 3: Cross multiply
    136,449.51x = 186,936.51 × 131,335.98
  4. Step 4: Simplify right side
    136,449.51x = 24,551,488,803.95
  5. Step 5: Solve for x
    x = 24,551,488,803.95/136,449.51
  6. Step 6: Final answer
    x = 179,930.95

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.