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Finding the Fourth Proportional to 170,641.99, 255,755.48 and 120,736.47

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Solution

The fourth proportional to 170,641.99, 255,755.48 and 120,736.47 is: 180,957.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,641.99 : 255,755.48 = 120,736.47 : x
  2. Step 2: Convert to fraction form
    170,641.99/255,755.48 = 120,736.47/x
  3. Step 3: Cross multiply
    170,641.99x = 255,755.48 × 120,736.47
  4. Step 4: Simplify right side
    170,641.99x = 30,879,014,193.76
  5. Step 5: Solve for x
    x = 30,879,014,193.76/170,641.99
  6. Step 6: Final answer
    x = 180,957.89

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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.