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Finding the Fourth Proportional to 397,133.52, 548,048.46 and 215,845.46

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Solution

The fourth proportional to 397,133.52, 548,048.46 and 215,845.46 is: 297,869.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,133.52 : 548,048.46 = 215,845.46 : x
  2. Step 2: Convert to fraction form
    397,133.52/548,048.46 = 215,845.46/x
  3. Step 3: Cross multiply
    397,133.52x = 548,048.46 × 215,845.46
  4. Step 4: Simplify right side
    397,133.52x = 118,293,771,950.99
  5. Step 5: Solve for x
    x = 118,293,771,950.99/397,133.52
  6. Step 6: Final answer
    x = 297,869.02

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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.