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Finding the Fourth Proportional to 665,579.40, 996,965.10 and 441,047.40

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Solution

The fourth proportional to 665,579.40, 996,965.10 and 441,047.40 is: 660,640.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,579.40 : 996,965.10 = 441,047.40 : x
  2. Step 2: Convert to fraction form
    665,579.40/996,965.10 = 441,047.40/x
  3. Step 3: Cross multiply
    665,579.40x = 996,965.10 × 441,047.40
  4. Step 4: Simplify right side
    665,579.40x = 439,708,865,245.74
  5. Step 5: Solve for x
    x = 439,708,865,245.74/665,579.40
  6. Step 6: Final answer
    x = 660,640.74

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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.