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Finding the Fourth Proportional to 515,168.94, 772,665.92 and 136,093.80

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Solution

The fourth proportional to 515,168.94, 772,665.92 and 136,093.80 is: 204,117.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,168.94 : 772,665.92 = 136,093.80 : x
  2. Step 2: Convert to fraction form
    515,168.94/772,665.92 = 136,093.80/x
  3. Step 3: Cross multiply
    515,168.94x = 772,665.92 × 136,093.80
  4. Step 4: Simplify right side
    515,168.94x = 105,155,041,183.30
  5. Step 5: Solve for x
    x = 105,155,041,183.30/515,168.94
  6. Step 6: Final answer
    x = 204,117.59

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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.