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Finding the Fourth Proportional to 486,003.99, 670,685.93 and 271,144.10

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Solution

The fourth proportional to 486,003.99, 670,685.93 and 271,144.10 is: 374,179.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,003.99 : 670,685.93 = 271,144.10 : x
  2. Step 2: Convert to fraction form
    486,003.99/670,685.93 = 271,144.10/x
  3. Step 3: Cross multiply
    486,003.99x = 670,685.93 × 271,144.10
  4. Step 4: Simplify right side
    486,003.99x = 181,852,532,872.51
  5. Step 5: Solve for x
    x = 181,852,532,872.51/486,003.99
  6. Step 6: Final answer
    x = 374,179.09

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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.