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Finding the Fourth Proportional to 373,840.43, 515,893.10 and 212,692.01

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Solution

The fourth proportional to 373,840.43, 515,893.10 and 212,692.01 is: 293,511.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,840.43 : 515,893.10 = 212,692.01 : x
  2. Step 2: Convert to fraction form
    373,840.43/515,893.10 = 212,692.01/x
  3. Step 3: Cross multiply
    373,840.43x = 515,893.10 × 212,692.01
  4. Step 4: Simplify right side
    373,840.43x = 109,726,336,741.21
  5. Step 5: Solve for x
    x = 109,726,336,741.21/373,840.43
  6. Step 6: Final answer
    x = 293,511.16

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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.