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Finding the Fourth Proportional to 418,777.00, 627,911.81 and 187,923.64

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Solution

The fourth proportional to 418,777.00, 627,911.81 and 187,923.64 is: 281,771.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,777.00 : 627,911.81 = 187,923.64 : x
  2. Step 2: Convert to fraction form
    418,777.00/627,911.81 = 187,923.64/x
  3. Step 3: Cross multiply
    418,777.00x = 627,911.81 × 187,923.64
  4. Step 4: Simplify right side
    418,777.00x = 117,999,473,224.45
  5. Step 5: Solve for x
    x = 117,999,473,224.45/418,777.00
  6. Step 6: Final answer
    x = 281,771.62

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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.