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Finding the Fourth Proportional to 93,251.97, 139,878.93 and 74,650.28

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Solution

The fourth proportional to 93,251.97, 139,878.93 and 74,650.28 is: 111,976.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,251.97 : 139,878.93 = 74,650.28 : x
  2. Step 2: Convert to fraction form
    93,251.97/139,878.93 = 74,650.28/x
  3. Step 3: Cross multiply
    93,251.97x = 139,878.93 × 74,650.28
  4. Step 4: Simplify right side
    93,251.97x = 10,442,000,591.21
  5. Step 5: Solve for x
    x = 10,442,000,591.21/93,251.97
  6. Step 6: Final answer
    x = 111,976.19

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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.