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Finding the Fourth Proportional to 68,592.88, 103,061.58 and 43,643.80

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Solution

The fourth proportional to 68,592.88, 103,061.58 and 43,643.80 is: 65,575.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,592.88 : 103,061.58 = 43,643.80 : x
  2. Step 2: Convert to fraction form
    68,592.88/103,061.58 = 43,643.80/x
  3. Step 3: Cross multiply
    68,592.88x = 103,061.58 × 43,643.80
  4. Step 4: Simplify right side
    68,592.88x = 4,497,998,985.20
  5. Step 5: Solve for x
    x = 4,497,998,985.20/68,592.88
  6. Step 6: Final answer
    x = 65,575.30

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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.