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Finding the Fourth Proportional to 94,508.60, 141,617.10 and 81,969.80

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Solution

The fourth proportional to 94,508.60, 141,617.10 and 81,969.80 is: 122,828.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,508.60 : 141,617.10 = 81,969.80 : x
  2. Step 2: Convert to fraction form
    94,508.60/141,617.10 = 81,969.80/x
  3. Step 3: Cross multiply
    94,508.60x = 141,617.10 × 81,969.80
  4. Step 4: Simplify right side
    94,508.60x = 11,608,325,363.58
  5. Step 5: Solve for x
    x = 11,608,325,363.58/94,508.60
  6. Step 6: Final answer
    x = 122,828.24

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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.