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Finding the Fourth Proportional to 445,759.61, 668,836.85 and 180,039.11

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Solution

The fourth proportional to 445,759.61, 668,836.85 and 180,039.11 is: 270,138.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,759.61 : 668,836.85 = 180,039.11 : x
  2. Step 2: Convert to fraction form
    445,759.61/668,836.85 = 180,039.11/x
  3. Step 3: Cross multiply
    445,759.61x = 668,836.85 × 180,039.11
  4. Step 4: Simplify right side
    445,759.61x = 120,416,786,964.82
  5. Step 5: Solve for x
    x = 120,416,786,964.82/445,759.61
  6. Step 6: Final answer
    x = 270,138.40

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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.