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Finding the Fourth Proportional to 30,496.40, 45,758.42 and 18,040.75

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Solution

The fourth proportional to 30,496.40, 45,758.42 and 18,040.75 is: 27,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,496.40 : 45,758.42 = 18,040.75 : x
  2. Step 2: Convert to fraction form
    30,496.40/45,758.42 = 18,040.75/x
  3. Step 3: Cross multiply
    30,496.40x = 45,758.42 × 18,040.75
  4. Step 4: Simplify right side
    30,496.40x = 825,516,207.36
  5. Step 5: Solve for x
    x = 825,516,207.36/30,496.40
  6. Step 6: Final answer
    x = 27,069.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.