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Finding the Fourth Proportional to 15,219.72, 22,811.58 and 7,410.60

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Solution

The fourth proportional to 15,219.72, 22,811.58 and 7,410.60 is: 11,107.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.72 : 22,811.58 = 7,410.60 : x
  2. Step 2: Convert to fraction form
    15,219.72/22,811.58 = 7,410.60/x
  3. Step 3: Cross multiply
    15,219.72x = 22,811.58 × 7,410.60
  4. Step 4: Simplify right side
    15,219.72x = 169,047,494.75
  5. Step 5: Solve for x
    x = 169,047,494.75/15,219.72
  6. Step 6: Final answer
    x = 11,107.14

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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.