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Finding the Fourth Proportional to 93,200.66, 139,662.72 and 68,455.70

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Solution

The fourth proportional to 93,200.66, 139,662.72 and 68,455.70 is: 102,581.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,200.66 : 139,662.72 = 68,455.70 : x
  2. Step 2: Convert to fraction form
    93,200.66/139,662.72 = 68,455.70/x
  3. Step 3: Cross multiply
    93,200.66x = 139,662.72 × 68,455.70
  4. Step 4: Simplify right side
    93,200.66x = 9,560,709,261.50
  5. Step 5: Solve for x
    x = 9,560,709,261.50/93,200.66
  6. Step 6: Final answer
    x = 102,581.99

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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.