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Finding the Fourth Proportional to 92,827.77, 139,137.98 and 85,354.71

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Solution

The fourth proportional to 92,827.77, 139,137.98 and 85,354.71 is: 127,936.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,827.77 : 139,137.98 = 85,354.71 : x
  2. Step 2: Convert to fraction form
    92,827.77/139,137.98 = 85,354.71/x
  3. Step 3: Cross multiply
    92,827.77x = 139,137.98 × 85,354.71
  4. Step 4: Simplify right side
    92,827.77x = 11,876,081,506.11
  5. Step 5: Solve for x
    x = 11,876,081,506.11/92,827.77
  6. Step 6: Final answer
    x = 127,936.73

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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.