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Finding the Fourth Proportional to 15,500.64, 23,219.82 and 7,168.98

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Solution

The fourth proportional to 15,500.64, 23,219.82 and 7,168.98 is: 10,739.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.64 : 23,219.82 = 7,168.98 : x
  2. Step 2: Convert to fraction form
    15,500.64/23,219.82 = 7,168.98/x
  3. Step 3: Cross multiply
    15,500.64x = 23,219.82 × 7,168.98
  4. Step 4: Simplify right side
    15,500.64x = 166,462,425.18
  5. Step 5: Solve for x
    x = 166,462,425.18/15,500.64
  6. Step 6: Final answer
    x = 10,739.07

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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.