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Finding the Fourth Proportional to 76,896.87, 106,117.70 and 43,362.87

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Solution

The fourth proportional to 76,896.87, 106,117.70 and 43,362.87 is: 59,840.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,896.87 : 106,117.70 = 43,362.87 : x
  2. Step 2: Convert to fraction form
    76,896.87/106,117.70 = 43,362.87/x
  3. Step 3: Cross multiply
    76,896.87x = 106,117.70 × 43,362.87
  4. Step 4: Simplify right side
    76,896.87x = 4,601,567,812.98
  5. Step 5: Solve for x
    x = 4,601,567,812.98/76,896.87
  6. Step 6: Final answer
    x = 59,840.77

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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.