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Finding the Fourth Proportional to 541,274.60, 811,911.90 and 167,412.20

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Solution

The fourth proportional to 541,274.60, 811,911.90 and 167,412.20 is: 251,118.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,274.60 : 811,911.90 = 167,412.20 : x
  2. Step 2: Convert to fraction form
    541,274.60/811,911.90 = 167,412.20/x
  3. Step 3: Cross multiply
    541,274.60x = 811,911.90 × 167,412.20
  4. Step 4: Simplify right side
    541,274.60x = 135,923,957,385.18
  5. Step 5: Solve for x
    x = 135,923,957,385.18/541,274.60
  6. Step 6: Final answer
    x = 251,118.30

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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.