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Finding the Fourth Proportional to 90,676.92, 136,001.94 and 48,505.08

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Solution

The fourth proportional to 90,676.92, 136,001.94 and 48,505.08 is: 72,750.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,676.92 : 136,001.94 = 48,505.08 : x
  2. Step 2: Convert to fraction form
    90,676.92/136,001.94 = 48,505.08/x
  3. Step 3: Cross multiply
    90,676.92x = 136,001.94 × 48,505.08
  4. Step 4: Simplify right side
    90,676.92x = 6,596,784,979.86
  5. Step 5: Solve for x
    x = 6,596,784,979.86/90,676.92
  6. Step 6: Final answer
    x = 72,750.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.