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Finding the Fourth Proportional to 412,840.80, 619,261.20 and 176,644.80

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Solution

The fourth proportional to 412,840.80, 619,261.20 and 176,644.80 is: 264,967.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,840.80 : 619,261.20 = 176,644.80 : x
  2. Step 2: Convert to fraction form
    412,840.80/619,261.20 = 176,644.80/x
  3. Step 3: Cross multiply
    412,840.80x = 619,261.20 × 176,644.80
  4. Step 4: Simplify right side
    412,840.80x = 109,389,270,821.76
  5. Step 5: Solve for x
    x = 109,389,270,821.76/412,840.80
  6. Step 6: Final answer
    x = 264,967.20

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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.