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Finding the Fourth Proportional to 16,959, 25,438.55 and 5,272.23

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Solution

The fourth proportional to 16,959, 25,438.55 and 5,272.23 is: 7,908.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,959 : 25,438.55 = 5,272.23 : x
  2. Step 2: Convert to fraction form
    16,959/25,438.55 = 5,272.23/x
  3. Step 3: Cross multiply
    16,959x = 25,438.55 × 5,272.23
  4. Step 4: Simplify right side
    16,959x = 134,117,860.11
  5. Step 5: Solve for x
    x = 134,117,860.11/16,959
  6. Step 6: Final answer
    x = 7,908.36

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Why These Related Problems?

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