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Finding the Fourth Proportional to 9,347.20, 14,011.20 and 5,449.60

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Solution

The fourth proportional to 9,347.20, 14,011.20 and 5,449.60 is: 8,168.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,347.20 : 14,011.20 = 5,449.60 : x
  2. Step 2: Convert to fraction form
    9,347.20/14,011.20 = 5,449.60/x
  3. Step 3: Cross multiply
    9,347.20x = 14,011.20 × 5,449.60
  4. Step 4: Simplify right side
    9,347.20x = 76,355,435.52
  5. Step 5: Solve for x
    x = 76,355,435.52/9,347.20
  6. Step 6: Final answer
    x = 8,168.80

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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.