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Finding the Fourth Proportional to 93,162.70, 128,560.29 and 50,721.14

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Solution

The fourth proportional to 93,162.70, 128,560.29 and 50,721.14 is: 69,992.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,162.70 : 128,560.29 = 50,721.14 : x
  2. Step 2: Convert to fraction form
    93,162.70/128,560.29 = 50,721.14/x
  3. Step 3: Cross multiply
    93,162.70x = 128,560.29 × 50,721.14
  4. Step 4: Simplify right side
    93,162.70x = 6,520,724,467.53
  5. Step 5: Solve for x
    x = 6,520,724,467.53/93,162.70
  6. Step 6: Final answer
    x = 69,992.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.