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Finding the Fourth Proportional to 68,963.90, 103,445.87 and 22,216.77

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Solution

The fourth proportional to 68,963.90, 103,445.87 and 22,216.77 is: 33,325.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,963.90 : 103,445.87 = 22,216.77 : x
  2. Step 2: Convert to fraction form
    68,963.90/103,445.87 = 22,216.77/x
  3. Step 3: Cross multiply
    68,963.90x = 103,445.87 × 22,216.77
  4. Step 4: Simplify right side
    68,963.90x = 2,298,232,990.16
  5. Step 5: Solve for x
    x = 2,298,232,990.16/68,963.90
  6. Step 6: Final answer
    x = 33,325.16

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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.