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Finding the Fourth Proportional to 13,703, 20,555.18 and 4,469

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Solution

The fourth proportional to 13,703, 20,555.18 and 4,469 is: 6,703.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703 : 20,555.18 = 4,469 : x
  2. Step 2: Convert to fraction form
    13,703/20,555.18 = 4,469/x
  3. Step 3: Cross multiply
    13,703x = 20,555.18 × 4,469
  4. Step 4: Simplify right side
    13,703x = 91,861,077.08
  5. Step 5: Solve for x
    x = 91,861,077.08/13,703
  6. Step 6: Final answer
    x = 6,703.72

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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.