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Finding the Fourth Proportional to 418,822.60, 627,197.10 and 335,878.60

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Solution

The fourth proportional to 418,822.60, 627,197.10 and 335,878.60 is: 502,986.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,822.60 : 627,197.10 = 335,878.60 : x
  2. Step 2: Convert to fraction form
    418,822.60/627,197.10 = 335,878.60/x
  3. Step 3: Cross multiply
    418,822.60x = 627,197.10 × 335,878.60
  4. Step 4: Simplify right side
    418,822.60x = 210,662,083,872.06
  5. Step 5: Solve for x
    x = 210,662,083,872.06/418,822.60
  6. Step 6: Final answer
    x = 502,986.43

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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.