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Finding the Fourth Proportional to 469,176.80, 703,765.20 and 216,456.80

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Solution

The fourth proportional to 469,176.80, 703,765.20 and 216,456.80 is: 324,685.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,176.80 : 703,765.20 = 216,456.80 : x
  2. Step 2: Convert to fraction form
    469,176.80/703,765.20 = 216,456.80/x
  3. Step 3: Cross multiply
    469,176.80x = 703,765.20 × 216,456.80
  4. Step 4: Simplify right side
    469,176.80x = 152,334,763,143.36
  5. Step 5: Solve for x
    x = 152,334,763,143.36/469,176.80
  6. Step 6: Final answer
    x = 324,685.20

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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.