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Finding the Fourth Proportional to 341,914.80, 512,872.20 and 155,290.80

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Solution

The fourth proportional to 341,914.80, 512,872.20 and 155,290.80 is: 232,936.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,914.80 : 512,872.20 = 155,290.80 : x
  2. Step 2: Convert to fraction form
    341,914.80/512,872.20 = 155,290.80/x
  3. Step 3: Cross multiply
    341,914.80x = 512,872.20 × 155,290.80
  4. Step 4: Simplify right side
    341,914.80x = 79,644,334,235.76
  5. Step 5: Solve for x
    x = 79,644,334,235.76/341,914.80
  6. Step 6: Final answer
    x = 232,936.20

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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.