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Finding the Fourth Proportional to 481,465.40, 664,421.84 and 266,605.46

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Solution

The fourth proportional to 481,465.40, 664,421.84 and 266,605.46 is: 367,915.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,465.40 : 664,421.84 = 266,605.46 : x
  2. Step 2: Convert to fraction form
    481,465.40/664,421.84 = 266,605.46/x
  3. Step 3: Cross multiply
    481,465.40x = 664,421.84 × 266,605.46
  4. Step 4: Simplify right side
    481,465.40x = 177,138,489,123.46
  5. Step 5: Solve for x
    x = 177,138,489,123.46/481,465.40
  6. Step 6: Final answer
    x = 367,915.30

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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.