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Finding the Fourth Proportional to 68,877.56, 103,219.14 and 29,420.84

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Solution

The fourth proportional to 68,877.56, 103,219.14 and 29,420.84 is: 44,089.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,877.56 : 103,219.14 = 29,420.84 : x
  2. Step 2: Convert to fraction form
    68,877.56/103,219.14 = 29,420.84/x
  3. Step 3: Cross multiply
    68,877.56x = 103,219.14 × 29,420.84
  4. Step 4: Simplify right side
    68,877.56x = 3,036,793,802.88
  5. Step 5: Solve for x
    x = 3,036,793,802.88/68,877.56
  6. Step 6: Final answer
    x = 44,089.74

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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.