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Finding the Fourth Proportional to 456,449.70, 684,674.55 and 231,844.80

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Solution

The fourth proportional to 456,449.70, 684,674.55 and 231,844.80 is: 347,767.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,449.70 : 684,674.55 = 231,844.80 : x
  2. Step 2: Convert to fraction form
    456,449.70/684,674.55 = 231,844.80/x
  3. Step 3: Cross multiply
    456,449.70x = 684,674.55 × 231,844.80
  4. Step 4: Simplify right side
    456,449.70x = 158,738,234,109.84
  5. Step 5: Solve for x
    x = 158,738,234,109.84/456,449.70
  6. Step 6: Final answer
    x = 347,767.20

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Double scale
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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.