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Finding the Fourth Proportional to 299,060.57, 448,589.84 and 74,420.98

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Solution

The fourth proportional to 299,060.57, 448,589.84 and 74,420.98 is: 111,631.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,060.57 : 448,589.84 = 74,420.98 : x
  2. Step 2: Convert to fraction form
    299,060.57/448,589.84 = 74,420.98/x
  3. Step 3: Cross multiply
    299,060.57x = 448,589.84 × 74,420.98
  4. Step 4: Simplify right side
    299,060.57x = 33,384,494,017.26
  5. Step 5: Solve for x
    x = 33,384,494,017.26/299,060.57
  6. Step 6: Final answer
    x = 111,631.21

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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.