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Finding the Fourth Proportional to 373,913.12, 559,975.80 and 215,661.80

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Solution

The fourth proportional to 373,913.12, 559,975.80 and 215,661.80 is: 322,977.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,913.12 : 559,975.80 = 215,661.80 : x
  2. Step 2: Convert to fraction form
    373,913.12/559,975.80 = 215,661.80/x
  3. Step 3: Cross multiply
    373,913.12x = 559,975.80 × 215,661.80
  4. Step 4: Simplify right side
    373,913.12x = 120,765,388,984.44
  5. Step 5: Solve for x
    x = 120,765,388,984.44/373,913.12
  6. Step 6: Final answer
    x = 322,977.14

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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.