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Finding the Fourth Proportional to 244,648.40, 366,972.60 and 78,453.20

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Solution

The fourth proportional to 244,648.40, 366,972.60 and 78,453.20 is: 117,679.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    244,648.40 : 366,972.60 = 78,453.20 : x
  2. Step 2: Convert to fraction form
    244,648.40/366,972.60 = 78,453.20/x
  3. Step 3: Cross multiply
    244,648.40x = 366,972.60 × 78,453.20
  4. Step 4: Simplify right side
    244,648.40x = 28,790,174,782.32
  5. Step 5: Solve for x
    x = 28,790,174,782.32/244,648.40
  6. Step 6: Final answer
    x = 117,679.80

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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.