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Finding the Fourth Proportional to 13,373.30, 20,069.78 and 6,805.01

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Solution

The fourth proportional to 13,373.30, 20,069.78 and 6,805.01 is: 10,212.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,373.30 : 20,069.78 = 6,805.01 : x
  2. Step 2: Convert to fraction form
    13,373.30/20,069.78 = 6,805.01/x
  3. Step 3: Cross multiply
    13,373.30x = 20,069.78 × 6,805.01
  4. Step 4: Simplify right side
    13,373.30x = 136,575,069.75
  5. Step 5: Solve for x
    x = 136,575,069.75/13,373.30
  6. Step 6: Final answer
    x = 10,212.52

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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.