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Finding the Fourth Proportional to 28,507.32, 39,340.16 and 15,932.07

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Solution

The fourth proportional to 28,507.32, 39,340.16 and 15,932.07 is: 21,986.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.32 : 39,340.16 = 15,932.07 : x
  2. Step 2: Convert to fraction form
    28,507.32/39,340.16 = 15,932.07/x
  3. Step 3: Cross multiply
    28,507.32x = 39,340.16 × 15,932.07
  4. Step 4: Simplify right side
    28,507.32x = 626,770,103.27
  5. Step 5: Solve for x
    x = 626,770,103.27/28,507.32
  6. Step 6: Final answer
    x = 21,986.29

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.