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Finding the Fourth Proportional to 66,207.90, 99,311.64 and 26,764.56

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Solution

The fourth proportional to 66,207.90, 99,311.64 and 26,764.56 is: 40,146.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,207.90 : 99,311.64 = 26,764.56 : x
  2. Step 2: Convert to fraction form
    66,207.90/99,311.64 = 26,764.56/x
  3. Step 3: Cross multiply
    66,207.90x = 99,311.64 × 26,764.56
  4. Step 4: Simplify right side
    66,207.90x = 2,658,032,347.48
  5. Step 5: Solve for x
    x = 2,658,032,347.48/66,207.90
  6. Step 6: Final answer
    x = 40,146.76

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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.