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Finding the Fourth Proportional to 64,654.90, 96,898.28 and 36,190.69

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Solution

The fourth proportional to 64,654.90, 96,898.28 and 36,190.69 is: 54,238.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,654.90 : 96,898.28 = 36,190.69 : x
  2. Step 2: Convert to fraction form
    64,654.90/96,898.28 = 36,190.69/x
  3. Step 3: Cross multiply
    64,654.90x = 96,898.28 × 36,190.69
  4. Step 4: Simplify right side
    64,654.90x = 3,506,815,189.81
  5. Step 5: Solve for x
    x = 3,506,815,189.81/64,654.90
  6. Step 6: Final answer
    x = 54,238.97

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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.