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Finding the Fourth Proportional to 117,412.62, 175,718.52 and 74,696.46

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Solution

The fourth proportional to 117,412.62, 175,718.52 and 74,696.46 is: 111,789.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,412.62 : 175,718.52 = 74,696.46 : x
  2. Step 2: Convert to fraction form
    117,412.62/175,718.52 = 74,696.46/x
  3. Step 3: Cross multiply
    117,412.62x = 175,718.52 × 74,696.46
  4. Step 4: Simplify right side
    117,412.62x = 13,125,551,400.44
  5. Step 5: Solve for x
    x = 13,125,551,400.44/117,412.62
  6. Step 6: Final answer
    x = 111,789.95

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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.