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Finding the Fourth Proportional to 373,605.12, 515,590.44 and 212,488.56

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Solution

The fourth proportional to 373,605.12, 515,590.44 and 212,488.56 is: 293,242.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,605.12 : 515,590.44 = 212,488.56 : x
  2. Step 2: Convert to fraction form
    373,605.12/515,590.44 = 212,488.56/x
  3. Step 3: Cross multiply
    373,605.12x = 515,590.44 × 212,488.56
  4. Step 4: Simplify right side
    373,605.12x = 109,557,070,145.37
  5. Step 5: Solve for x
    x = 109,557,070,145.37/373,605.12
  6. Step 6: Final answer
    x = 293,242.96

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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.