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Finding the Fourth Proportional to 74,261.16, 111,420.90 and 32,679

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Solution

The fourth proportional to 74,261.16, 111,420.90 and 32,679 is: 49,031.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,261.16 : 111,420.90 = 32,679 : x
  2. Step 2: Convert to fraction form
    74,261.16/111,420.90 = 32,679/x
  3. Step 3: Cross multiply
    74,261.16x = 111,420.90 × 32,679
  4. Step 4: Simplify right side
    74,261.16x = 3,641,123,591.10
  5. Step 5: Solve for x
    x = 3,641,123,591.10/74,261.16
  6. Step 6: Final answer
    x = 49,031.33

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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.