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Finding the Fourth Proportional to 16,672.25, 25,012.44 and 4,985.47

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Solution

The fourth proportional to 16,672.25, 25,012.44 and 4,985.47 is: 7,479.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,672.25 : 25,012.44 = 4,985.47 : x
  2. Step 2: Convert to fraction form
    16,672.25/25,012.44 = 4,985.47/x
  3. Step 3: Cross multiply
    16,672.25x = 25,012.44 × 4,985.47
  4. Step 4: Simplify right side
    16,672.25x = 124,698,769.25
  5. Step 5: Solve for x
    x = 124,698,769.25/16,672.25
  6. Step 6: Final answer
    x = 7,479.42

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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.