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Finding the Fourth Proportional to 17,763.80, 26,633.36 and 8,992.72

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Solution

The fourth proportional to 17,763.80, 26,633.36 and 8,992.72 is: 13,482.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,763.80 : 26,633.36 = 8,992.72 : x
  2. Step 2: Convert to fraction form
    17,763.80/26,633.36 = 8,992.72/x
  3. Step 3: Cross multiply
    17,763.80x = 26,633.36 × 8,992.72
  4. Step 4: Simplify right side
    17,763.80x = 239,506,349.14
  5. Step 5: Solve for x
    x = 239,506,349.14/17,763.80
  6. Step 6: Final answer
    x = 13,482.83

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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.