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Finding the Fourth Proportional to 512,808.60, 769,905.45 and 299,794.80

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Solution

The fourth proportional to 512,808.60, 769,905.45 and 299,794.80 is: 450,097.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,808.60 : 769,905.45 = 299,794.80 : x
  2. Step 2: Convert to fraction form
    512,808.60/769,905.45 = 299,794.80/x
  3. Step 3: Cross multiply
    512,808.60x = 769,905.45 × 299,794.80
  4. Step 4: Simplify right side
    512,808.60x = 230,813,650,401.66
  5. Step 5: Solve for x
    x = 230,813,650,401.66/512,808.60
  6. Step 6: Final answer
    x = 450,097.07

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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.