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Finding the Fourth Proportional to 481,256.84, 664,135.70 and 266,411.72

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Solution

The fourth proportional to 481,256.84, 664,135.70 and 266,411.72 is: 367,648.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,256.84 : 664,135.70 = 266,411.72 : x
  2. Step 2: Convert to fraction form
    481,256.84/664,135.70 = 266,411.72/x
  3. Step 3: Cross multiply
    481,256.84x = 664,135.70 × 266,411.72
  4. Step 4: Simplify right side
    481,256.84x = 176,933,534,150.40
  5. Step 5: Solve for x
    x = 176,933,534,150.40/481,256.84
  6. Step 6: Final answer
    x = 367,648.87

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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.