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Finding the Fourth Proportional to 374,051.89, 516,194.90 and 212,917.31

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Solution

The fourth proportional to 374,051.89, 516,194.90 and 212,917.31 is: 293,827.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,051.89 : 516,194.90 = 212,917.31 : x
  2. Step 2: Convert to fraction form
    374,051.89/516,194.90 = 212,917.31/x
  3. Step 3: Cross multiply
    374,051.89x = 516,194.90 × 212,917.31
  4. Step 4: Simplify right side
    374,051.89x = 109,906,829,543.72
  5. Step 5: Solve for x
    x = 109,906,829,543.72/374,051.89
  6. Step 6: Final answer
    x = 293,827.76

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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.