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Finding the Fourth Proportional to 92,791.92, 139,187.81 and 53,323.86

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Solution

The fourth proportional to 92,791.92, 139,187.81 and 53,323.86 is: 79,985.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,791.92 : 139,187.81 = 53,323.86 : x
  2. Step 2: Convert to fraction form
    92,791.92/139,187.81 = 53,323.86/x
  3. Step 3: Cross multiply
    92,791.92x = 139,187.81 × 53,323.86
  4. Step 4: Simplify right side
    92,791.92x = 7,422,031,427.46
  5. Step 5: Solve for x
    x = 7,422,031,427.46/92,791.92
  6. Step 6: Final answer
    x = 79,985.75

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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.