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Finding the Fourth Proportional to 4,801.20, 7,216.20 and 4,167.60

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Solution

The fourth proportional to 4,801.20, 7,216.20 and 4,167.60 is: 6,263.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,801.20 : 7,216.20 = 4,167.60 : x
  2. Step 2: Convert to fraction form
    4,801.20/7,216.20 = 4,167.60/x
  3. Step 3: Cross multiply
    4,801.20x = 7,216.20 × 4,167.60
  4. Step 4: Simplify right side
    4,801.20x = 30,074,235.12
  5. Step 5: Solve for x
    x = 30,074,235.12/4,801.20
  6. Step 6: Final answer
    x = 6,263.90

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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.