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Finding the Fourth Proportional to 28,706.80, 43,060.20 and 26,633.20

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Solution

The fourth proportional to 28,706.80, 43,060.20 and 26,633.20 is: 39,949.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,706.80 : 43,060.20 = 26,633.20 : x
  2. Step 2: Convert to fraction form
    28,706.80/43,060.20 = 26,633.20/x
  3. Step 3: Cross multiply
    28,706.80x = 43,060.20 × 26,633.20
  4. Step 4: Simplify right side
    28,706.80x = 1,146,830,918.64
  5. Step 5: Solve for x
    x = 1,146,830,918.64/28,706.80
  6. Step 6: Final answer
    x = 39,949.80

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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.