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Finding the Fourth Proportional to 178,980.98, 246,988.52 and 98,408.42

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Solution

The fourth proportional to 178,980.98, 246,988.52 and 98,408.42 is: 135,800.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,980.98 : 246,988.52 = 98,408.42 : x
  2. Step 2: Convert to fraction form
    178,980.98/246,988.52 = 98,408.42/x
  3. Step 3: Cross multiply
    178,980.98x = 246,988.52 × 98,408.42
  4. Step 4: Simplify right side
    178,980.98x = 24,305,750,011.34
  5. Step 5: Solve for x
    x = 24,305,750,011.34/178,980.98
  6. Step 6: Final answer
    x = 135,800.74

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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.