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Finding the Fourth Proportional to 15,048.40, 20,766.34 and 8,675.02

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Solution

The fourth proportional to 15,048.40, 20,766.34 and 8,675.02 is: 11,971.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,048.40 : 20,766.34 = 8,675.02 : x
  2. Step 2: Convert to fraction form
    15,048.40/20,766.34 = 8,675.02/x
  3. Step 3: Cross multiply
    15,048.40x = 20,766.34 × 8,675.02
  4. Step 4: Simplify right side
    15,048.40x = 180,148,414.83
  5. Step 5: Solve for x
    x = 180,148,414.83/15,048.40
  6. Step 6: Final answer
    x = 11,971.27

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Why These Related Problems?

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