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Finding the Fourth Proportional to 93,190.72, 139,790.40 and 26,640.31

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Solution

The fourth proportional to 93,190.72, 139,790.40 and 26,640.31 is: 39,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,190.72 : 139,790.40 = 26,640.31 : x
  2. Step 2: Convert to fraction form
    93,190.72/139,790.40 = 26,640.31/x
  3. Step 3: Cross multiply
    93,190.72x = 139,790.40 × 26,640.31
  4. Step 4: Simplify right side
    93,190.72x = 3,724,059,591.02
  5. Step 5: Solve for x
    x = 3,724,059,591.02/93,190.72
  6. Step 6: Final answer
    x = 39,961.70

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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.