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Finding the Fourth Proportional to 662,216.80, 993,325.20 and 395,840.20

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Solution

The fourth proportional to 662,216.80, 993,325.20 and 395,840.20 is: 593,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,216.80 : 993,325.20 = 395,840.20 : x
  2. Step 2: Convert to fraction form
    662,216.80/993,325.20 = 395,840.20/x
  3. Step 3: Cross multiply
    662,216.80x = 993,325.20 × 395,840.20
  4. Step 4: Simplify right side
    662,216.80x = 393,198,045,833.04
  5. Step 5: Solve for x
    x = 393,198,045,833.04/662,216.80
  6. Step 6: Final answer
    x = 593,760.30

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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.