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Finding the Fourth Proportional to 68,665.74, 102,483.79 and 64,181.74

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Solution

The fourth proportional to 68,665.74, 102,483.79 and 64,181.74 is: 95,791.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,665.74 : 102,483.79 = 64,181.74 : x
  2. Step 2: Convert to fraction form
    68,665.74/102,483.79 = 64,181.74/x
  3. Step 3: Cross multiply
    68,665.74x = 102,483.79 × 64,181.74
  4. Step 4: Simplify right side
    68,665.74x = 6,577,587,963.99
  5. Step 5: Solve for x
    x = 6,577,587,963.99/68,665.74
  6. Step 6: Final answer
    x = 95,791.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.