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Finding the Fourth Proportional to 79,282.64, 118,942.16 and 26,690.72

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Solution

The fourth proportional to 79,282.64, 118,942.16 and 26,690.72 is: 40,042.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,282.64 : 118,942.16 = 26,690.72 : x
  2. Step 2: Convert to fraction form
    79,282.64/118,942.16 = 26,690.72/x
  3. Step 3: Cross multiply
    79,282.64x = 118,942.16 × 26,690.72
  4. Step 4: Simplify right side
    79,282.64x = 3,174,651,888.76
  5. Step 5: Solve for x
    x = 3,174,651,888.76/79,282.64
  6. Step 6: Final answer
    x = 40,042.21

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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.