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Finding the Fourth Proportional to 9,797.20, 14,697.40 and 3,221.60

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Solution

The fourth proportional to 9,797.20, 14,697.40 and 3,221.60 is: 4,832.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,797.20 : 14,697.40 = 3,221.60 : x
  2. Step 2: Convert to fraction form
    9,797.20/14,697.40 = 3,221.60/x
  3. Step 3: Cross multiply
    9,797.20x = 14,697.40 × 3,221.60
  4. Step 4: Simplify right side
    9,797.20x = 47,349,143.84
  5. Step 5: Solve for x
    x = 47,349,143.84/9,797.20
  6. Step 6: Final answer
    x = 4,832.93

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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.