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Finding the Fourth Proportional to 443,000.70, 664,501.05 and 253,266.30

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Solution

The fourth proportional to 443,000.70, 664,501.05 and 253,266.30 is: 379,899.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,000.70 : 664,501.05 = 253,266.30 : x
  2. Step 2: Convert to fraction form
    443,000.70/664,501.05 = 253,266.30/x
  3. Step 3: Cross multiply
    443,000.70x = 664,501.05 × 253,266.30
  4. Step 4: Simplify right side
    443,000.70x = 168,295,722,279.62
  5. Step 5: Solve for x
    x = 168,295,722,279.62/443,000.70
  6. Step 6: Final answer
    x = 379,899.45

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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.