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Finding the Fourth Proportional to 188,649.91, 260,355.97 and 108,088.12

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Solution

The fourth proportional to 188,649.91, 260,355.97 and 108,088.12 is: 149,172.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,649.91 : 260,355.97 = 108,088.12 : x
  2. Step 2: Convert to fraction form
    188,649.91/260,355.97 = 108,088.12/x
  3. Step 3: Cross multiply
    188,649.91x = 260,355.97 × 108,088.12
  4. Step 4: Simplify right side
    188,649.91x = 28,141,385,485.86
  5. Step 5: Solve for x
    x = 28,141,385,485.86/188,649.91
  6. Step 6: Final answer
    x = 149,172.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.