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Finding the Fourth Proportional to 84,887.78, 117,155.29 and 50,914.96

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Solution

The fourth proportional to 84,887.78, 117,155.29 and 50,914.96 is: 70,268.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,887.78 : 117,155.29 = 50,914.96 : x
  2. Step 2: Convert to fraction form
    84,887.78/117,155.29 = 50,914.96/x
  3. Step 3: Cross multiply
    84,887.78x = 117,155.29 × 50,914.96
  4. Step 4: Simplify right side
    84,887.78x = 5,964,956,483.96
  5. Step 5: Solve for x
    x = 5,964,956,483.96/84,887.78
  6. Step 6: Final answer
    x = 70,268.73

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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.