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Finding the Fourth Proportional to 65,390.49, 90,266.30 and 44,198.46

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Solution

The fourth proportional to 65,390.49, 90,266.30 and 44,198.46 is: 61,012.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,390.49 : 90,266.30 = 44,198.46 : x
  2. Step 2: Convert to fraction form
    65,390.49/90,266.30 = 44,198.46/x
  3. Step 3: Cross multiply
    65,390.49x = 90,266.30 × 44,198.46
  4. Step 4: Simplify right side
    65,390.49x = 3,989,631,394.65
  5. Step 5: Solve for x
    x = 3,989,631,394.65/65,390.49
  6. Step 6: Final answer
    x = 61,012.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.