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Finding the Fourth Proportional to 135,793.95, 186,730.97 and 117,857.72

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Solution

The fourth proportional to 135,793.95, 186,730.97 and 117,857.72 is: 162,066.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,793.95 : 186,730.97 = 117,857.72 : x
  2. Step 2: Convert to fraction form
    135,793.95/186,730.97 = 117,857.72/x
  3. Step 3: Cross multiply
    135,793.95x = 186,730.97 × 117,857.72
  4. Step 4: Simplify right side
    135,793.95x = 22,007,684,854.65
  5. Step 5: Solve for x
    x = 22,007,684,854.65/135,793.95
  6. Step 6: Final answer
    x = 162,066.76

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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.