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Finding the Fourth Proportional to 92,688.44, 139,039.95 and 36,524.66

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Solution

The fourth proportional to 92,688.44, 139,039.95 and 36,524.66 is: 54,789.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,688.44 : 139,039.95 = 36,524.66 : x
  2. Step 2: Convert to fraction form
    92,688.44/139,039.95 = 36,524.66/x
  3. Step 3: Cross multiply
    92,688.44x = 139,039.95 × 36,524.66
  4. Step 4: Simplify right side
    92,688.44x = 5,078,386,900.17
  5. Step 5: Solve for x
    x = 5,078,386,900.17/92,688.44
  6. Step 6: Final answer
    x = 54,789.86

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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.