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Finding the Fourth Proportional to 519,874.30, 779,811.45 and 443,766.70

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Solution

The fourth proportional to 519,874.30, 779,811.45 and 443,766.70 is: 665,650.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,874.30 : 779,811.45 = 443,766.70 : x
  2. Step 2: Convert to fraction form
    519,874.30/779,811.45 = 443,766.70/x
  3. Step 3: Cross multiply
    519,874.30x = 779,811.45 × 443,766.70
  4. Step 4: Simplify right side
    519,874.30x = 346,054,353,788.72
  5. Step 5: Solve for x
    x = 346,054,353,788.72/519,874.30
  6. Step 6: Final answer
    x = 665,650.05

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Double scale
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Similar ratio
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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.