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Finding the Fourth Proportional to 117,046.38, 175,107.63 and 90,188.91

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Solution

The fourth proportional to 117,046.38, 175,107.63 and 90,188.91 is: 134,927.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,046.38 : 175,107.63 = 90,188.91 : x
  2. Step 2: Convert to fraction form
    117,046.38/175,107.63 = 90,188.91/x
  3. Step 3: Cross multiply
    117,046.38x = 175,107.63 × 90,188.91
  4. Step 4: Simplify right side
    117,046.38x = 15,792,766,282.38
  5. Step 5: Solve for x
    x = 15,792,766,282.38/117,046.38
  6. Step 6: Final answer
    x = 134,927.42

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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.