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Finding the Fourth Proportional to 331,536.60, 497,304.90 and 82,218.60

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Solution

The fourth proportional to 331,536.60, 497,304.90 and 82,218.60 is: 123,327.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,536.60 : 497,304.90 = 82,218.60 : x
  2. Step 2: Convert to fraction form
    331,536.60/497,304.90 = 82,218.60/x
  3. Step 3: Cross multiply
    331,536.60x = 497,304.90 × 82,218.60
  4. Step 4: Simplify right side
    331,536.60x = 40,887,712,651.14
  5. Step 5: Solve for x
    x = 40,887,712,651.14/331,536.60
  6. Step 6: Final answer
    x = 123,327.90

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1.5x scale

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.