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Finding the Fourth Proportional to 11,208.60, 16,805.09 and 4,965.21

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Solution

The fourth proportional to 11,208.60, 16,805.09 and 4,965.21 is: 7,444.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,208.60 : 16,805.09 = 4,965.21 : x
  2. Step 2: Convert to fraction form
    11,208.60/16,805.09 = 4,965.21/x
  3. Step 3: Cross multiply
    11,208.60x = 16,805.09 × 4,965.21
  4. Step 4: Simplify right side
    11,208.60x = 83,440,776.09
  5. Step 5: Solve for x
    x = 83,440,776.09/11,208.60
  6. Step 6: Final answer
    x = 7,444.35

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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.