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Finding the Fourth Proportional to 28,782.96, 43,174.72 and 8,008.08

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Solution

The fourth proportional to 28,782.96, 43,174.72 and 8,008.08 is: 12,012.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,782.96 : 43,174.72 = 8,008.08 : x
  2. Step 2: Convert to fraction form
    28,782.96/43,174.72 = 8,008.08/x
  3. Step 3: Cross multiply
    28,782.96x = 43,174.72 × 8,008.08
  4. Step 4: Simplify right side
    28,782.96x = 345,746,611.74
  5. Step 5: Solve for x
    x = 345,746,611.74/28,782.96
  6. Step 6: Final answer
    x = 12,012.20

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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.