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Finding the Fourth Proportional to 331,295.40, 496,943.10 and 109,679.40

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Solution

The fourth proportional to 331,295.40, 496,943.10 and 109,679.40 is: 164,519.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,295.40 : 496,943.10 = 109,679.40 : x
  2. Step 2: Convert to fraction form
    331,295.40/496,943.10 = 109,679.40/x
  3. Step 3: Cross multiply
    331,295.40x = 496,943.10 × 109,679.40
  4. Step 4: Simplify right side
    331,295.40x = 54,504,421,042.14
  5. Step 5: Solve for x
    x = 54,504,421,042.14/331,295.40
  6. Step 6: Final answer
    x = 164,519.10

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1.5x scale

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.