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Finding the Fourth Proportional to 92,812.90, 139,235.22 and 36,623.68

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Solution

The fourth proportional to 92,812.90, 139,235.22 and 36,623.68 is: 54,941.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,812.90 : 139,235.22 = 36,623.68 : x
  2. Step 2: Convert to fraction form
    92,812.90/139,235.22 = 36,623.68/x
  3. Step 3: Cross multiply
    92,812.90x = 139,235.22 × 36,623.68
  4. Step 4: Simplify right side
    92,812.90x = 5,099,306,142.01
  5. Step 5: Solve for x
    x = 5,099,306,142.01/92,812.90
  6. Step 6: Final answer
    x = 54,941.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.