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Finding the Fourth Proportional to 19,958.36, 29,938.44 and 7,475.16

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Solution

The fourth proportional to 19,958.36, 29,938.44 and 7,475.16 is: 11,213.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,958.36 : 29,938.44 = 7,475.16 : x
  2. Step 2: Convert to fraction form
    19,958.36/29,938.44 = 7,475.16/x
  3. Step 3: Cross multiply
    19,958.36x = 29,938.44 × 7,475.16
  4. Step 4: Simplify right side
    19,958.36x = 223,794,629.15
  5. Step 5: Solve for x
    x = 223,794,629.15/19,958.36
  6. Step 6: Final answer
    x = 11,213.08

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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.