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Finding the Fourth Proportional to 125,081.10, 172,611.63 and 68,491.98

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Solution

The fourth proportional to 125,081.10, 172,611.63 and 68,491.98 is: 94,518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,081.10 : 172,611.63 = 68,491.98 : x
  2. Step 2: Convert to fraction form
    125,081.10/172,611.63 = 68,491.98/x
  3. Step 3: Cross multiply
    125,081.10x = 172,611.63 × 68,491.98
  4. Step 4: Simplify right side
    125,081.10x = 11,822,512,309.73
  5. Step 5: Solve for x
    x = 11,822,512,309.73/125,081.10
  6. Step 6: Final answer
    x = 94,518.77

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.