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Finding the Fourth Proportional to 27,641.21, 38,145.90 and 15,706.57

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Solution

The fourth proportional to 27,641.21, 38,145.90 and 15,706.57 is: 21,675.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,641.21 : 38,145.90 = 15,706.57 : x
  2. Step 2: Convert to fraction form
    27,641.21/38,145.90 = 15,706.57/x
  3. Step 3: Cross multiply
    27,641.21x = 38,145.90 × 15,706.57
  4. Step 4: Simplify right side
    27,641.21x = 599,140,979.30
  5. Step 5: Solve for x
    x = 599,140,979.30/27,641.21
  6. Step 6: Final answer
    x = 21,675.65

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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.