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Finding the Fourth Proportional to 67,987.20, 101,881.20 and 60,967.20

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Solution

The fourth proportional to 67,987.20, 101,881.20 and 60,967.20 is: 91,361.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,987.20 : 101,881.20 = 60,967.20 : x
  2. Step 2: Convert to fraction form
    67,987.20/101,881.20 = 60,967.20/x
  3. Step 3: Cross multiply
    67,987.20x = 101,881.20 × 60,967.20
  4. Step 4: Simplify right side
    67,987.20x = 6,211,411,496.64
  5. Step 5: Solve for x
    x = 6,211,411,496.64/67,987.20
  6. Step 6: Final answer
    x = 91,361.48

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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.