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Finding the Fourth Proportional to 144,083.40, 198,835.32 and 80,421.18

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Solution

The fourth proportional to 144,083.40, 198,835.32 and 80,421.18 is: 110,981.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,083.40 : 198,835.32 = 80,421.18 : x
  2. Step 2: Convert to fraction form
    144,083.40/198,835.32 = 80,421.18/x
  3. Step 3: Cross multiply
    144,083.40x = 198,835.32 × 80,421.18
  4. Step 4: Simplify right side
    144,083.40x = 15,990,571,060.08
  5. Step 5: Solve for x
    x = 15,990,571,060.08/144,083.40
  6. Step 6: Final answer
    x = 110,981.36

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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.