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Finding the Fourth Proportional to 665,965.80, 996,980.40 and 441,579.60

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Solution

The fourth proportional to 665,965.80, 996,980.40 and 441,579.60 is: 661,064.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,965.80 : 996,980.40 = 441,579.60 : x
  2. Step 2: Convert to fraction form
    665,965.80/996,980.40 = 441,579.60/x
  3. Step 3: Cross multiply
    665,965.80x = 996,980.40 × 441,579.60
  4. Step 4: Simplify right side
    665,965.80x = 440,246,206,239.84
  5. Step 5: Solve for x
    x = 440,246,206,239.84/665,965.80
  6. Step 6: Final answer
    x = 661,064.29

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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.