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Finding the Fourth Proportional to 337,619.80, 506,429.70 and 211,648.60

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Solution

The fourth proportional to 337,619.80, 506,429.70 and 211,648.60 is: 317,472.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    337,619.80 : 506,429.70 = 211,648.60 : x
  2. Step 2: Convert to fraction form
    337,619.80/506,429.70 = 211,648.60/x
  3. Step 3: Cross multiply
    337,619.80x = 506,429.70 × 211,648.60
  4. Step 4: Simplify right side
    337,619.80x = 107,185,137,003.42
  5. Step 5: Solve for x
    x = 107,185,137,003.42/337,619.80
  6. Step 6: Final answer
    x = 317,472.90

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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.