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Finding the Fourth Proportional to 12,993.44, 19,509.64 and 7,453.04

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Solution

The fourth proportional to 12,993.44, 19,509.64 and 7,453.04 is: 11,190.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,993.44 : 19,509.64 = 7,453.04 : x
  2. Step 2: Convert to fraction form
    12,993.44/19,509.64 = 7,453.04/x
  3. Step 3: Cross multiply
    12,993.44x = 19,509.64 × 7,453.04
  4. Step 4: Simplify right side
    12,993.44x = 145,406,127.31
  5. Step 5: Solve for x
    x = 145,406,127.31/12,993.44
  6. Step 6: Final answer
    x = 11,190.73

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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.