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Finding the Fourth Proportional to 393,010.68, 589,022.73 and 168,106.77

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Solution

The fourth proportional to 393,010.68, 589,022.73 and 168,106.77 is: 251,949.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,010.68 : 589,022.73 = 168,106.77 : x
  2. Step 2: Convert to fraction form
    393,010.68/589,022.73 = 168,106.77/x
  3. Step 3: Cross multiply
    393,010.68x = 589,022.73 × 168,106.77
  4. Step 4: Simplify right side
    393,010.68x = 99,018,708,596.88
  5. Step 5: Solve for x
    x = 99,018,708,596.88/393,010.68
  6. Step 6: Final answer
    x = 251,949.15

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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.