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Finding the Fourth Proportional to 4,666.80, 7,000.20 and 4,393.20

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Solution

The fourth proportional to 4,666.80, 7,000.20 and 4,393.20 is: 6,589.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,666.80 : 7,000.20 = 4,393.20 : x
  2. Step 2: Convert to fraction form
    4,666.80/7,000.20 = 4,393.20/x
  3. Step 3: Cross multiply
    4,666.80x = 7,000.20 × 4,393.20
  4. Step 4: Simplify right side
    4,666.80x = 30,753,278.64
  5. Step 5: Solve for x
    x = 30,753,278.64/4,666.80
  6. Step 6: Final answer
    x = 6,589.80

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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.