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Finding the Fourth Proportional to 68,773.12, 103,628.29 and 56,566.60

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Solution

The fourth proportional to 68,773.12, 103,628.29 and 56,566.60 is: 85,235.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,773.12 : 103,628.29 = 56,566.60 : x
  2. Step 2: Convert to fraction form
    68,773.12/103,628.29 = 56,566.60/x
  3. Step 3: Cross multiply
    68,773.12x = 103,628.29 × 56,566.60
  4. Step 4: Simplify right side
    68,773.12x = 5,861,900,029.11
  5. Step 5: Solve for x
    x = 5,861,900,029.11/68,773.12
  6. Step 6: Final answer
    x = 85,235.34

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.