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Finding the Fourth Proportional to 73,931.78, 110,917.11 and 38,395.46

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Solution

The fourth proportional to 73,931.78, 110,917.11 and 38,395.46 is: 57,603.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,931.78 : 110,917.11 = 38,395.46 : x
  2. Step 2: Convert to fraction form
    73,931.78/110,917.11 = 38,395.46/x
  3. Step 3: Cross multiply
    73,931.78x = 110,917.11 × 38,395.46
  4. Step 4: Simplify right side
    73,931.78x = 4,258,713,049.72
  5. Step 5: Solve for x
    x = 4,258,713,049.72/73,931.78
  6. Step 6: Final answer
    x = 57,603.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.