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Finding the Fourth Proportional to 73,868.68, 111,301.63 and 61,009.12

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Solution

The fourth proportional to 73,868.68, 111,301.63 and 61,009.12 is: 91,925.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,868.68 : 111,301.63 = 61,009.12 : x
  2. Step 2: Convert to fraction form
    73,868.68/111,301.63 = 61,009.12/x
  3. Step 3: Cross multiply
    73,868.68x = 111,301.63 × 61,009.12
  4. Step 4: Simplify right side
    73,868.68x = 6,790,414,500.87
  5. Step 5: Solve for x
    x = 6,790,414,500.87/73,868.68
  6. Step 6: Final answer
    x = 91,925.49

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.