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Finding the Fourth Proportional to 167,907.20, 251,642.10 and 67,985.60

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Solution

The fourth proportional to 167,907.20, 251,642.10 and 67,985.60 is: 101,889.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,907.20 : 251,642.10 = 67,985.60 : x
  2. Step 2: Convert to fraction form
    167,907.20/251,642.10 = 67,985.60/x
  3. Step 3: Cross multiply
    167,907.20x = 251,642.10 × 67,985.60
  4. Step 4: Simplify right side
    167,907.20x = 17,108,039,153.76
  5. Step 5: Solve for x
    x = 17,108,039,153.76/167,907.20
  6. Step 6: Final answer
    x = 101,889.85

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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.