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Finding the Fourth Proportional to 93,796, 140,728.56 and 49,420.96

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Solution

The fourth proportional to 93,796, 140,728.56 and 49,420.96 is: 74,149.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,796 : 140,728.56 = 49,420.96 : x
  2. Step 2: Convert to fraction form
    93,796/140,728.56 = 49,420.96/x
  3. Step 3: Cross multiply
    93,796x = 140,728.56 × 49,420.96
  4. Step 4: Simplify right side
    93,796x = 6,954,940,534.62
  5. Step 5: Solve for x
    x = 6,954,940,534.62/93,796
  6. Step 6: Final answer
    x = 74,149.65

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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.