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Finding the Fourth Proportional to 44,978.21, 67,467.28 and 13,388.12

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Solution

The fourth proportional to 44,978.21, 67,467.28 and 13,388.12 is: 20,082.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,978.21 : 67,467.28 = 13,388.12 : x
  2. Step 2: Convert to fraction form
    44,978.21/67,467.28 = 13,388.12/x
  3. Step 3: Cross multiply
    44,978.21x = 67,467.28 × 13,388.12
  4. Step 4: Simplify right side
    44,978.21x = 903,260,040.71
  5. Step 5: Solve for x
    x = 903,260,040.71/44,978.21
  6. Step 6: Final answer
    x = 20,082.17

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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.