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Finding the Fourth Proportional to 373,280.93, 515,105.48 and 212,113.61

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Solution

The fourth proportional to 373,280.93, 515,105.48 and 212,113.61 is: 292,704.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,280.93 : 515,105.48 = 212,113.61 : x
  2. Step 2: Convert to fraction form
    373,280.93/515,105.48 = 212,113.61/x
  3. Step 3: Cross multiply
    373,280.93x = 515,105.48 × 212,113.61
  4. Step 4: Simplify right side
    373,280.93x = 109,260,879,257.49
  5. Step 5: Solve for x
    x = 109,260,879,257.49/373,280.93
  6. Step 6: Final answer
    x = 292,704.16

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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.