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Finding the Fourth Proportional to 373,361.20, 560,041.80 and 215,897.20

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Solution

The fourth proportional to 373,361.20, 560,041.80 and 215,897.20 is: 323,845.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,361.20 : 560,041.80 = 215,897.20 : x
  2. Step 2: Convert to fraction form
    373,361.20/560,041.80 = 215,897.20/x
  3. Step 3: Cross multiply
    373,361.20x = 560,041.80 × 215,897.20
  4. Step 4: Simplify right side
    373,361.20x = 120,911,456,502.96
  5. Step 5: Solve for x
    x = 120,911,456,502.96/373,361.20
  6. Step 6: Final answer
    x = 323,845.80

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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.