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Finding the Fourth Proportional to 665,969.80, 996,986.40 and 441,583.60

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Solution

The fourth proportional to 665,969.80, 996,986.40 and 441,583.60 is: 661,070.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,969.80 : 996,986.40 = 441,583.60 : x
  2. Step 2: Convert to fraction form
    665,969.80/996,986.40 = 441,583.60/x
  3. Step 3: Cross multiply
    665,969.80x = 996,986.40 × 441,583.60
  4. Step 4: Simplify right side
    665,969.80x = 440,252,843,663.04
  5. Step 5: Solve for x
    x = 440,252,843,663.04/665,969.80
  6. Step 6: Final answer
    x = 661,070.28

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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.