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Finding the Fourth Proportional to 92,919.95, 138,677.73 and 83,951.90

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Solution

The fourth proportional to 92,919.95, 138,677.73 and 83,951.90 is: 125,293.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,919.95 : 138,677.73 = 83,951.90 : x
  2. Step 2: Convert to fraction form
    92,919.95/138,677.73 = 83,951.90/x
  3. Step 3: Cross multiply
    92,919.95x = 138,677.73 × 83,951.90
  4. Step 4: Simplify right side
    92,919.95x = 11,642,258,501.43
  5. Step 5: Solve for x
    x = 11,642,258,501.43/92,919.95
  6. Step 6: Final answer
    x = 125,293.42

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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.