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Finding the Fourth Proportional to 77,863.20, 116,794.80 and 62,311.20

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Solution

The fourth proportional to 77,863.20, 116,794.80 and 62,311.20 is: 93,466.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,863.20 : 116,794.80 = 62,311.20 : x
  2. Step 2: Convert to fraction form
    77,863.20/116,794.80 = 62,311.20/x
  3. Step 3: Cross multiply
    77,863.20x = 116,794.80 × 62,311.20
  4. Step 4: Simplify right side
    77,863.20x = 7,277,624,141.76
  5. Step 5: Solve for x
    x = 7,277,624,141.76/77,863.20
  6. Step 6: Final answer
    x = 93,466.80

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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.