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Finding the Fourth Proportional to 418,555.94, 627,143.78 and 241,212.02

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Solution

The fourth proportional to 418,555.94, 627,143.78 and 241,212.02 is: 361,420.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,555.94 : 627,143.78 = 241,212.02 : x
  2. Step 2: Convert to fraction form
    418,555.94/627,143.78 = 241,212.02/x
  3. Step 3: Cross multiply
    418,555.94x = 627,143.78 × 241,212.02
  4. Step 4: Simplify right side
    418,555.94x = 151,274,614,868.52
  5. Step 5: Solve for x
    x = 151,274,614,868.52/418,555.94
  6. Step 6: Final answer
    x = 361,420.31

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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.