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Finding the Fourth Proportional to 92,774.92, 128,029.42 and 52,487.86

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Solution

The fourth proportional to 92,774.92, 128,029.42 and 52,487.86 is: 72,433.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,774.92 : 128,029.42 = 52,487.86 : x
  2. Step 2: Convert to fraction form
    92,774.92/128,029.42 = 52,487.86/x
  3. Step 3: Cross multiply
    92,774.92x = 128,029.42 × 52,487.86
  4. Step 4: Simplify right side
    92,774.92x = 6,719,990,272.84
  5. Step 5: Solve for x
    x = 6,719,990,272.84/92,774.92
  6. Step 6: Final answer
    x = 72,433.26

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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.