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Finding the Fourth Proportional to 519,763.80, 779,645.70 and 443,656.20

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Solution

The fourth proportional to 519,763.80, 779,645.70 and 443,656.20 is: 665,484.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,763.80 : 779,645.70 = 443,656.20 : x
  2. Step 2: Convert to fraction form
    519,763.80/779,645.70 = 443,656.20/x
  3. Step 3: Cross multiply
    519,763.80x = 779,645.70 × 443,656.20
  4. Step 4: Simplify right side
    519,763.80x = 345,894,648,608.34
  5. Step 5: Solve for x
    x = 345,894,648,608.34/519,763.80
  6. Step 6: Final answer
    x = 665,484.30

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Double scale
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Similar ratio
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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.