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Finding the Fourth Proportional to 64,590.54, 96,899.85 and 27,129.24

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Solution

The fourth proportional to 64,590.54, 96,899.85 and 27,129.24 is: 40,699.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,590.54 : 96,899.85 = 27,129.24 : x
  2. Step 2: Convert to fraction form
    64,590.54/96,899.85 = 27,129.24/x
  3. Step 3: Cross multiply
    64,590.54x = 96,899.85 × 27,129.24
  4. Step 4: Simplify right side
    64,590.54x = 2,628,819,286.61
  5. Step 5: Solve for x
    x = 2,628,819,286.61/64,590.54
  6. Step 6: Final answer
    x = 40,699.76

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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.