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Finding the Fourth Proportional to 88,940.90, 133,087.35 and 65,612.90

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Solution

The fourth proportional to 88,940.90, 133,087.35 and 65,612.90 is: 98,180.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,940.90 : 133,087.35 = 65,612.90 : x
  2. Step 2: Convert to fraction form
    88,940.90/133,087.35 = 65,612.90/x
  3. Step 3: Cross multiply
    88,940.90x = 133,087.35 × 65,612.90
  4. Step 4: Simplify right side
    88,940.90x = 8,732,246,986.82
  5. Step 5: Solve for x
    x = 8,732,246,986.82/88,940.90
  6. Step 6: Final answer
    x = 98,180.33

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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.