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Finding the Fourth Proportional to 418,865.00, 627,860.01 and 205,337.25

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Solution

The fourth proportional to 418,865.00, 627,860.01 and 205,337.25 is: 307,791.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,865.00 : 627,860.01 = 205,337.25 : x
  2. Step 2: Convert to fraction form
    418,865.00/627,860.01 = 205,337.25/x
  3. Step 3: Cross multiply
    418,865.00x = 627,860.01 × 205,337.25
  4. Step 4: Simplify right side
    418,865.00x = 128,923,047,838.37
  5. Step 5: Solve for x
    x = 128,923,047,838.37/418,865.00
  6. Step 6: Final answer
    x = 307,791.41

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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.