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Finding the Fourth Proportional to 374,051.45, 516,194.30 and 212,916.87

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Solution

The fourth proportional to 374,051.45, 516,194.30 and 212,916.87 is: 293,827.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,051.45 : 516,194.30 = 212,916.87 : x
  2. Step 2: Convert to fraction form
    374,051.45/516,194.30 = 212,916.87/x
  3. Step 3: Cross multiply
    374,051.45x = 516,194.30 × 212,916.87
  4. Step 4: Simplify right side
    374,051.45x = 109,906,474,002.48
  5. Step 5: Solve for x
    x = 109,906,474,002.48/374,051.45
  6. Step 6: Final answer
    x = 293,827.16

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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.