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Finding the Fourth Proportional to 115,869.99, 173,664.63 and 49,170

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Solution

The fourth proportional to 115,869.99, 173,664.63 and 49,170 is: 73,695.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,869.99 : 173,664.63 = 49,170 : x
  2. Step 2: Convert to fraction form
    115,869.99/173,664.63 = 49,170/x
  3. Step 3: Cross multiply
    115,869.99x = 173,664.63 × 49,170
  4. Step 4: Simplify right side
    115,869.99x = 8,539,089,857.10
  5. Step 5: Solve for x
    x = 8,539,089,857.10/115,869.99
  6. Step 6: Final answer
    x = 73,695.44

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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.