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Finding the Fourth Proportional to 67,398.72, 92,943.79 and 52,285.87

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Solution

The fourth proportional to 67,398.72, 92,943.79 and 52,285.87 is: 72,102.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,398.72 : 92,943.79 = 52,285.87 : x
  2. Step 2: Convert to fraction form
    67,398.72/92,943.79 = 52,285.87/x
  3. Step 3: Cross multiply
    67,398.72x = 92,943.79 × 52,285.87
  4. Step 4: Simplify right side
    67,398.72x = 4,859,646,906.71
  5. Step 5: Solve for x
    x = 4,859,646,906.71/67,398.72
  6. Step 6: Final answer
    x = 72,102.96

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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.