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Finding the Fourth Proportional to 15,959.44, 21,931.51 and 15,227.67

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Solution

The fourth proportional to 15,959.44, 21,931.51 and 15,227.67 is: 20,925.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,959.44 : 21,931.51 = 15,227.67 : x
  2. Step 2: Convert to fraction form
    15,959.44/21,931.51 = 15,227.67/x
  3. Step 3: Cross multiply
    15,959.44x = 21,931.51 × 15,227.67
  4. Step 4: Simplify right side
    15,959.44x = 333,965,796.88
  5. Step 5: Solve for x
    x = 333,965,796.88/15,959.44
  6. Step 6: Final answer
    x = 20,925.91

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These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.