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Finding the Fourth Proportional to 92,874.85, 128,168.78 and 52,587.54

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Solution

The fourth proportional to 92,874.85, 128,168.78 and 52,587.54 is: 72,571.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,874.85 : 128,168.78 = 52,587.54 : x
  2. Step 2: Convert to fraction form
    92,874.85/128,168.78 = 52,587.54/x
  3. Step 3: Cross multiply
    92,874.85x = 128,168.78 × 52,587.54
  4. Step 4: Simplify right side
    92,874.85x = 6,740,080,845.00
  5. Step 5: Solve for x
    x = 6,740,080,845.00/92,874.85
  6. Step 6: Final answer
    x = 72,571.65

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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.