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Finding the Fourth Proportional to 178,986.17, 246,994.26 and 98,408.90

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Solution

The fourth proportional to 178,986.17, 246,994.26 and 98,408.90 is: 135,800.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,986.17 : 246,994.26 = 98,408.90 : x
  2. Step 2: Convert to fraction form
    178,986.17/246,994.26 = 98,408.90/x
  3. Step 3: Cross multiply
    178,986.17x = 246,994.26 × 98,408.90
  4. Step 4: Simplify right side
    178,986.17x = 24,306,432,197.94
  5. Step 5: Solve for x
    x = 24,306,432,197.94/178,986.17
  6. Step 6: Final answer
    x = 135,800.62

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Why These Related Problems?

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