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Finding the Fourth Proportional to 17,221.13, 25,836.03 and 4,909.13

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Solution

The fourth proportional to 17,221.13, 25,836.03 and 4,909.13 is: 7,364.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,221.13 : 25,836.03 = 4,909.13 : x
  2. Step 2: Convert to fraction form
    17,221.13/25,836.03 = 4,909.13/x
  3. Step 3: Cross multiply
    17,221.13x = 25,836.03 × 4,909.13
  4. Step 4: Simplify right side
    17,221.13x = 126,832,300.77
  5. Step 5: Solve for x
    x = 126,832,300.77/17,221.13
  6. Step 6: Final answer
    x = 7,364.93

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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.