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Finding the Fourth Proportional to 117,318.39, 175,974.14 and 28,570.61

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Solution

The fourth proportional to 117,318.39, 175,974.14 and 28,570.61 is: 42,855.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,318.39 : 175,974.14 = 28,570.61 : x
  2. Step 2: Convert to fraction form
    117,318.39/175,974.14 = 28,570.61/x
  3. Step 3: Cross multiply
    117,318.39x = 175,974.14 × 28,570.61
  4. Step 4: Simplify right side
    117,318.39x = 5,027,687,644.15
  5. Step 5: Solve for x
    x = 5,027,687,644.15/117,318.39
  6. Step 6: Final answer
    x = 42,855.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.