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Finding the Fourth Proportional to 330,626.96, 495,987.16 and 105,934.84

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Solution

The fourth proportional to 330,626.96, 495,987.16 and 105,934.84 is: 158,917.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,626.96 : 495,987.16 = 105,934.84 : x
  2. Step 2: Convert to fraction form
    330,626.96/495,987.16 = 105,934.84/x
  3. Step 3: Cross multiply
    330,626.96x = 495,987.16 × 105,934.84
  4. Step 4: Simplify right side
    330,626.96x = 52,542,320,436.65
  5. Step 5: Solve for x
    x = 52,542,320,436.65/330,626.96
  6. Step 6: Final answer
    x = 158,917.23

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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.