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Finding the Fourth Proportional to 167,531.40, 251,297.10 and 42,872.40

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Solution

The fourth proportional to 167,531.40, 251,297.10 and 42,872.40 is: 64,308.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,531.40 : 251,297.10 = 42,872.40 : x
  2. Step 2: Convert to fraction form
    167,531.40/251,297.10 = 42,872.40/x
  3. Step 3: Cross multiply
    167,531.40x = 251,297.10 × 42,872.40
  4. Step 4: Simplify right side
    167,531.40x = 10,773,709,790.04
  5. Step 5: Solve for x
    x = 10,773,709,790.04/167,531.40
  6. Step 6: Final answer
    x = 64,308.60

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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.