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Finding the Fourth Proportional to 44,978.40, 67,455.84 and 13,379.96

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Solution

The fourth proportional to 44,978.40, 67,455.84 and 13,379.96 is: 20,066.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,978.40 : 67,455.84 = 13,379.96 : x
  2. Step 2: Convert to fraction form
    44,978.40/67,455.84 = 13,379.96/x
  3. Step 3: Cross multiply
    44,978.40x = 67,455.84 × 13,379.96
  4. Step 4: Simplify right side
    44,978.40x = 902,556,440.97
  5. Step 5: Solve for x
    x = 902,556,440.97/44,978.40
  6. Step 6: Final answer
    x = 20,066.44

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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.