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Finding the Fourth Proportional to 373,445.69, 515,398.59 and 212,324.85

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Solution

The fourth proportional to 373,445.69, 515,398.59 and 212,324.85 is: 293,033.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,445.69 : 515,398.59 = 212,324.85 : x
  2. Step 2: Convert to fraction form
    373,445.69/515,398.59 = 212,324.85/x
  3. Step 3: Cross multiply
    373,445.69x = 515,398.59 × 212,324.85
  4. Step 4: Simplify right side
    373,445.69x = 109,431,928,311.96
  5. Step 5: Solve for x
    x = 109,431,928,311.96/373,445.69
  6. Step 6: Final answer
    x = 293,033.05

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1.5x scale

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.