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Finding the Fourth Proportional to 443,774.70, 665,662.05 and 338,798.70

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Solution

The fourth proportional to 443,774.70, 665,662.05 and 338,798.70 is: 508,198.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,774.70 : 665,662.05 = 338,798.70 : x
  2. Step 2: Convert to fraction form
    443,774.70/665,662.05 = 338,798.70/x
  3. Step 3: Cross multiply
    443,774.70x = 665,662.05 × 338,798.70
  4. Step 4: Simplify right side
    443,774.70x = 225,525,437,179.34
  5. Step 5: Solve for x
    x = 225,525,437,179.34/443,774.70
  6. Step 6: Final answer
    x = 508,198.05

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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.