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Finding the Fourth Proportional to 93,181.76, 139,843.45 and 68,286.82

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Solution

The fourth proportional to 93,181.76, 139,843.45 and 68,286.82 is: 102,482.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,181.76 : 139,843.45 = 68,286.82 : x
  2. Step 2: Convert to fraction form
    93,181.76/139,843.45 = 68,286.82/x
  3. Step 3: Cross multiply
    93,181.76x = 139,843.45 × 68,286.82
  4. Step 4: Simplify right side
    93,181.76x = 9,549,463,799.11
  5. Step 5: Solve for x
    x = 9,549,463,799.11/93,181.76
  6. Step 6: Final answer
    x = 102,482.11

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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.