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Finding the Fourth Proportional to 374,128.20, 561,192.30 and 368,223.30

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Solution

The fourth proportional to 374,128.20, 561,192.30 and 368,223.30 is: 552,334.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,128.20 : 561,192.30 = 368,223.30 : x
  2. Step 2: Convert to fraction form
    374,128.20/561,192.30 = 368,223.30/x
  3. Step 3: Cross multiply
    374,128.20x = 561,192.30 × 368,223.30
  4. Step 4: Simplify right side
    374,128.20x = 206,644,080,640.59
  5. Step 5: Solve for x
    x = 206,644,080,640.59/374,128.20
  6. Step 6: Final answer
    x = 552,334.95

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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.