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Finding the Fourth Proportional to 97,940.80, 146,911.20 and 92,035.90

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Solution

The fourth proportional to 97,940.80, 146,911.20 and 92,035.90 is: 138,053.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,940.80 : 146,911.20 = 92,035.90 : x
  2. Step 2: Convert to fraction form
    97,940.80/146,911.20 = 92,035.90/x
  3. Step 3: Cross multiply
    97,940.80x = 146,911.20 × 92,035.90
  4. Step 4: Simplify right side
    97,940.80x = 13,521,104,512.08
  5. Step 5: Solve for x
    x = 13,521,104,512.08/97,940.80
  6. Step 6: Final answer
    x = 138,053.85

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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.