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Finding the Fourth Proportional to 109,940.90, 154,228.30 and 109,940.90

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Solution

The fourth proportional to 109,940.90, 154,228.30 and 109,940.90 is: 154,228.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,940.90 : 154,228.30 = 109,940.90 : x
  2. Step 2: Convert to fraction form
    109,940.90/154,228.30 = 109,940.90/x
  3. Step 3: Cross multiply
    109,940.90x = 154,228.30 × 109,940.90
  4. Step 4: Simplify right side
    109,940.90x = 16,955,998,107.47
  5. Step 5: Solve for x
    x = 16,955,998,107.47/109,940.90
  6. Step 6: Final answer
    x = 154,228.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.