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Finding the Fourth Proportional to 13,425.66, 20,048.00 and 10,965.29

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Solution

The fourth proportional to 13,425.66, 20,048.00 and 10,965.29 is: 16,374.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.66 : 20,048.00 = 10,965.29 : x
  2. Step 2: Convert to fraction form
    13,425.66/20,048.00 = 10,965.29/x
  3. Step 3: Cross multiply
    13,425.66x = 20,048.00 × 10,965.29
  4. Step 4: Simplify right side
    13,425.66x = 219,831,978.85
  5. Step 5: Solve for x
    x = 219,831,978.85/13,425.66
  6. Step 6: Final answer
    x = 16,374.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.