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Finding the Fourth Proportional to 418,241.98, 627,361.71 and 118,722.81

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Solution

The fourth proportional to 418,241.98, 627,361.71 and 118,722.81 is: 178,083.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,241.98 : 627,361.71 = 118,722.81 : x
  2. Step 2: Convert to fraction form
    418,241.98/627,361.71 = 118,722.81/x
  3. Step 3: Cross multiply
    418,241.98x = 627,361.71 × 118,722.81
  4. Step 4: Simplify right side
    418,241.98x = 74,482,145,097.61
  5. Step 5: Solve for x
    x = 74,482,145,097.61/418,241.98
  6. Step 6: Final answer
    x = 178,083.86

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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.