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Finding the Fourth Proportional to 92,855.17, 128,143.20 and 52,568.11

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Solution

The fourth proportional to 92,855.17, 128,143.20 and 52,568.11 is: 72,545.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,855.17 : 128,143.20 = 52,568.11 : x
  2. Step 2: Convert to fraction form
    92,855.17/128,143.20 = 52,568.11/x
  3. Step 3: Cross multiply
    92,855.17x = 128,143.20 × 52,568.11
  4. Step 4: Simplify right side
    92,855.17x = 6,736,245,833.35
  5. Step 5: Solve for x
    x = 6,736,245,833.35/92,855.17
  6. Step 6: Final answer
    x = 72,545.73

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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.