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Finding the Fourth Proportional to 67,212.66, 100,748.64 and 25,075.78

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Solution

The fourth proportional to 67,212.66, 100,748.64 and 25,075.78 is: 37,587.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,212.66 : 100,748.64 = 25,075.78 : x
  2. Step 2: Convert to fraction form
    67,212.66/100,748.64 = 25,075.78/x
  3. Step 3: Cross multiply
    67,212.66x = 100,748.64 × 25,075.78
  4. Step 4: Simplify right side
    67,212.66x = 2,526,350,731.94
  5. Step 5: Solve for x
    x = 2,526,350,731.94/67,212.66
  6. Step 6: Final answer
    x = 37,587.42

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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.