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Finding the Fourth Proportional to 73,345.50, 101,218.01 and 39,811.50

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Solution

The fourth proportional to 73,345.50, 101,218.01 and 39,811.50 is: 54,940.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,345.50 : 101,218.01 = 39,811.50 : x
  2. Step 2: Convert to fraction form
    73,345.50/101,218.01 = 39,811.50/x
  3. Step 3: Cross multiply
    73,345.50x = 101,218.01 × 39,811.50
  4. Step 4: Simplify right side
    73,345.50x = 4,029,640,606.06
  5. Step 5: Solve for x
    x = 4,029,640,606.06/73,345.50
  6. Step 6: Final answer
    x = 54,940.53

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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.