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Finding the Fourth Proportional to 204,356.66, 306,531.41 and 91,957.32

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Solution

The fourth proportional to 204,356.66, 306,531.41 and 91,957.32 is: 137,934.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,356.66 : 306,531.41 = 91,957.32 : x
  2. Step 2: Convert to fraction form
    204,356.66/306,531.41 = 91,957.32/x
  3. Step 3: Cross multiply
    204,356.66x = 306,531.41 × 91,957.32
  4. Step 4: Simplify right side
    204,356.66x = 28,187,806,499.63
  5. Step 5: Solve for x
    x = 28,187,806,499.63/204,356.66
  6. Step 6: Final answer
    x = 137,934.37

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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.