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Finding the Fourth Proportional to 373,712.61, 515,735.47 and 212,563.52

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Solution

The fourth proportional to 373,712.61, 515,735.47 and 212,563.52 is: 293,344.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,712.61 : 515,735.47 = 212,563.52 : x
  2. Step 2: Convert to fraction form
    373,712.61/515,735.47 = 212,563.52/x
  3. Step 3: Cross multiply
    373,712.61x = 515,735.47 × 212,563.52
  4. Step 4: Simplify right side
    373,712.61x = 109,626,546,892.05
  5. Step 5: Solve for x
    x = 109,626,546,892.05/373,712.61
  6. Step 6: Final answer
    x = 293,344.52

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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.