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Finding the Fourth Proportional to 415,274.74, 622,808.43 and 134,872.18

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Solution

The fourth proportional to 415,274.74, 622,808.43 and 134,872.18 is: 202,274.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,274.74 : 622,808.43 = 134,872.18 : x
  2. Step 2: Convert to fraction form
    415,274.74/622,808.43 = 134,872.18/x
  3. Step 3: Cross multiply
    415,274.74x = 622,808.43 × 134,872.18
  4. Step 4: Simplify right side
    415,274.74x = 83,999,530,676.48
  5. Step 5: Solve for x
    x = 83,999,530,676.48/415,274.74
  6. Step 6: Final answer
    x = 202,274.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.