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Finding the Fourth Proportional to 178,768.64, 246,700.64 and 98,198.40

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Solution

The fourth proportional to 178,768.64, 246,700.64 and 98,198.40 is: 135,513.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,768.64 : 246,700.64 = 98,198.40 : x
  2. Step 2: Convert to fraction form
    178,768.64/246,700.64 = 98,198.40/x
  3. Step 3: Cross multiply
    178,768.64x = 246,700.64 × 98,198.40
  4. Step 4: Simplify right side
    178,768.64x = 24,225,608,126.98
  5. Step 5: Solve for x
    x = 24,225,608,126.98/178,768.64
  6. Step 6: Final answer
    x = 135,513.75

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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.