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Finding the Fourth Proportional to 299,297.25, 449,019.86 and 88,934.31

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Solution

The fourth proportional to 299,297.25, 449,019.86 and 88,934.31 is: 133,423.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,297.25 : 449,019.86 = 88,934.31 : x
  2. Step 2: Convert to fraction form
    299,297.25/449,019.86 = 88,934.31/x
  3. Step 3: Cross multiply
    299,297.25x = 449,019.86 × 88,934.31
  4. Step 4: Simplify right side
    299,297.25x = 39,933,270,980.73
  5. Step 5: Solve for x
    x = 39,933,270,980.73/299,297.25
  6. Step 6: Final answer
    x = 133,423.45

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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.