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Finding the Fourth Proportional to 413,796.80, 621,002.40 and 164,657.60

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Solution

The fourth proportional to 413,796.80, 621,002.40 and 164,657.60 is: 247,108.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,796.80 : 621,002.40 = 164,657.60 : x
  2. Step 2: Convert to fraction form
    413,796.80/621,002.40 = 164,657.60/x
  3. Step 3: Cross multiply
    413,796.80x = 621,002.40 × 164,657.60
  4. Step 4: Simplify right side
    413,796.80x = 102,252,764,778.24
  5. Step 5: Solve for x
    x = 102,252,764,778.24/413,796.80
  6. Step 6: Final answer
    x = 247,108.64

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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.