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Finding the Fourth Proportional to 324,411.20, 486,616.80 and 235,246.40

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Solution

The fourth proportional to 324,411.20, 486,616.80 and 235,246.40 is: 352,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,411.20 : 486,616.80 = 235,246.40 : x
  2. Step 2: Convert to fraction form
    324,411.20/486,616.80 = 235,246.40/x
  3. Step 3: Cross multiply
    324,411.20x = 486,616.80 × 235,246.40
  4. Step 4: Simplify right side
    324,411.20x = 114,474,850,379.52
  5. Step 5: Solve for x
    x = 114,474,850,379.52/324,411.20
  6. Step 6: Final answer
    x = 352,869.60

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Similar ratio
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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.