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Finding the Fourth Proportional to 77,940.52, 116,949.18 and 36,390.44

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Solution

The fourth proportional to 77,940.52, 116,949.18 and 36,390.44 is: 54,603.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,940.52 : 116,949.18 = 36,390.44 : x
  2. Step 2: Convert to fraction form
    77,940.52/116,949.18 = 36,390.44/x
  3. Step 3: Cross multiply
    77,940.52x = 116,949.18 × 36,390.44
  4. Step 4: Simplify right side
    77,940.52x = 4,255,832,117.84
  5. Step 5: Solve for x
    x = 4,255,832,117.84/77,940.52
  6. Step 6: Final answer
    x = 54,603.59

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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.