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Finding the Fourth Proportional to 665,966.80, 996,981.90 and 441,580.60

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Solution

The fourth proportional to 665,966.80, 996,981.90 and 441,580.60 is: 661,065.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,966.80 : 996,981.90 = 441,580.60 : x
  2. Step 2: Convert to fraction form
    665,966.80/996,981.90 = 441,580.60/x
  3. Step 3: Cross multiply
    665,966.80x = 996,981.90 × 441,580.60
  4. Step 4: Simplify right side
    665,966.80x = 440,247,865,591.14
  5. Step 5: Solve for x
    x = 440,247,865,591.14/665,966.80
  6. Step 6: Final answer
    x = 661,065.79

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1.5x scale

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.