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Finding the Fourth Proportional to 20,499.12, 30,758.72 and 7,352.51

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Solution

The fourth proportional to 20,499.12, 30,758.72 and 7,352.51 is: 11,032.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.12 : 30,758.72 = 7,352.51 : x
  2. Step 2: Convert to fraction form
    20,499.12/30,758.72 = 7,352.51/x
  3. Step 3: Cross multiply
    20,499.12x = 30,758.72 × 7,352.51
  4. Step 4: Simplify right side
    20,499.12x = 226,153,605.83
  5. Step 5: Solve for x
    x = 226,153,605.83/20,499.12
  6. Step 6: Final answer
    x = 11,032.36

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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.