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Finding the Fourth Proportional to 92,773.92, 128,028.04 and 52,486.86

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Solution

The fourth proportional to 92,773.92, 128,028.04 and 52,486.86 is: 72,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,773.92 : 128,028.04 = 52,486.86 : x
  2. Step 2: Convert to fraction form
    92,773.92/128,028.04 = 52,486.86/x
  3. Step 3: Cross multiply
    92,773.92x = 128,028.04 × 52,486.86
  4. Step 4: Simplify right side
    92,773.92x = 6,719,789,811.55
  5. Step 5: Solve for x
    x = 6,719,789,811.55/92,773.92
  6. Step 6: Final answer
    x = 72,431.88

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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.