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Finding the Fourth Proportional to 374,531.20, 561,796.80 and 356,099.20

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Solution

The fourth proportional to 374,531.20, 561,796.80 and 356,099.20 is: 534,148.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,531.20 : 561,796.80 = 356,099.20 : x
  2. Step 2: Convert to fraction form
    374,531.20/561,796.80 = 356,099.20/x
  3. Step 3: Cross multiply
    374,531.20x = 561,796.80 × 356,099.20
  4. Step 4: Simplify right side
    374,531.20x = 200,055,391,042.56
  5. Step 5: Solve for x
    x = 200,055,391,042.56/374,531.20
  6. Step 6: Final answer
    x = 534,148.80

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1.5x scale

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.