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Finding the Fourth Proportional to 531,171.90, 733,008.11 and 289,456.56

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Solution

The fourth proportional to 531,171.90, 733,008.11 and 289,456.56 is: 399,445.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,171.90 : 733,008.11 = 289,456.56 : x
  2. Step 2: Convert to fraction form
    531,171.90/733,008.11 = 289,456.56/x
  3. Step 3: Cross multiply
    531,171.90x = 733,008.11 × 289,456.56
  4. Step 4: Simplify right side
    531,171.90x = 212,174,005,972.70
  5. Step 5: Solve for x
    x = 212,174,005,972.70/531,171.90
  6. Step 6: Final answer
    x = 399,445.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.