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Finding the Fourth Proportional to 79,095.90, 118,682.79 and 36,978.87

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Solution

The fourth proportional to 79,095.90, 118,682.79 and 36,978.87 is: 55,486.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,095.90 : 118,682.79 = 36,978.87 : x
  2. Step 2: Convert to fraction form
    79,095.90/118,682.79 = 36,978.87/x
  3. Step 3: Cross multiply
    79,095.90x = 118,682.79 × 36,978.87
  4. Step 4: Simplify right side
    79,095.90x = 4,388,755,462.65
  5. Step 5: Solve for x
    x = 4,388,755,462.65/79,095.90
  6. Step 6: Final answer
    x = 55,486.51

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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.