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Finding the Fourth Proportional to 64,242.45, 96,379.88 and 51,874.83

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Solution

The fourth proportional to 64,242.45, 96,379.88 and 51,874.83 is: 77,825.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,242.45 : 96,379.88 = 51,874.83 : x
  2. Step 2: Convert to fraction form
    64,242.45/96,379.88 = 51,874.83/x
  3. Step 3: Cross multiply
    64,242.45x = 96,379.88 × 51,874.83
  4. Step 4: Simplify right side
    64,242.45x = 4,999,689,631.05
  5. Step 5: Solve for x
    x = 4,999,689,631.05/64,242.45
  6. Step 6: Final answer
    x = 77,825.33

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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.