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Finding the Fourth Proportional to 93,251.76, 139,878.60 and 74,650.04

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Solution

The fourth proportional to 93,251.76, 139,878.60 and 74,650.04 is: 111,975.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,251.76 : 139,878.60 = 74,650.04 : x
  2. Step 2: Convert to fraction form
    93,251.76/139,878.60 = 74,650.04/x
  3. Step 3: Cross multiply
    93,251.76x = 139,878.60 × 74,650.04
  4. Step 4: Simplify right side
    93,251.76x = 10,441,943,085.14
  5. Step 5: Solve for x
    x = 10,441,943,085.14/93,251.76
  6. Step 6: Final answer
    x = 111,975.83

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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.