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Finding the Fourth Proportional to 21,193.68, 29,246.10 and 11,761.68

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Solution

The fourth proportional to 21,193.68, 29,246.10 and 11,761.68 is: 16,230.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.68 : 29,246.10 = 11,761.68 : x
  2. Step 2: Convert to fraction form
    21,193.68/29,246.10 = 11,761.68/x
  3. Step 3: Cross multiply
    21,193.68x = 29,246.10 × 11,761.68
  4. Step 4: Simplify right side
    21,193.68x = 343,983,269.45
  5. Step 5: Solve for x
    x = 343,983,269.45/21,193.68
  6. Step 6: Final answer
    x = 16,230.46

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1.5x scale

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.