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Finding the Fourth Proportional to 92,062.95, 137,422.32 and 78,999.27

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Solution

The fourth proportional to 92,062.95, 137,422.32 and 78,999.27 is: 117,922.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,062.95 : 137,422.32 = 78,999.27 : x
  2. Step 2: Convert to fraction form
    92,062.95/137,422.32 = 78,999.27/x
  3. Step 3: Cross multiply
    92,062.95x = 137,422.32 × 78,999.27
  4. Step 4: Simplify right side
    92,062.95x = 10,856,262,961.71
  5. Step 5: Solve for x
    x = 10,856,262,961.71/92,062.95
  6. Step 6: Final answer
    x = 117,922.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.