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Finding the Fourth Proportional to 17,632.80, 26,449.08 and 4,485

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Solution

The fourth proportional to 17,632.80, 26,449.08 and 4,485 is: 6,727.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,632.80 : 26,449.08 = 4,485 : x
  2. Step 2: Convert to fraction form
    17,632.80/26,449.08 = 4,485/x
  3. Step 3: Cross multiply
    17,632.80x = 26,449.08 × 4,485
  4. Step 4: Simplify right side
    17,632.80x = 118,624,123.80
  5. Step 5: Solve for x
    x = 118,624,123.80/17,632.80
  6. Step 6: Final answer
    x = 6,727.47

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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.