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Finding the Fourth Proportional to 92,788.66, 139,252.96 and 67,892.94

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Solution

The fourth proportional to 92,788.66, 139,252.96 and 67,892.94 is: 101,890.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,788.66 : 139,252.96 = 67,892.94 : x
  2. Step 2: Convert to fraction form
    92,788.66/139,252.96 = 67,892.94/x
  3. Step 3: Cross multiply
    92,788.66x = 139,252.96 × 67,892.94
  4. Step 4: Simplify right side
    92,788.66x = 9,454,292,360.37
  5. Step 5: Solve for x
    x = 9,454,292,360.37/92,788.66
  6. Step 6: Final answer
    x = 101,890.60

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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.