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Finding the Fourth Proportional to 418,220.16, 627,327.48 and 118,700.94

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Solution

The fourth proportional to 418,220.16, 627,327.48 and 118,700.94 is: 178,050.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,220.16 : 627,327.48 = 118,700.94 : x
  2. Step 2: Convert to fraction form
    418,220.16/627,327.48 = 118,700.94/x
  3. Step 3: Cross multiply
    418,220.16x = 627,327.48 × 118,700.94
  4. Step 4: Simplify right side
    418,220.16x = 74,464,361,563.83
  5. Step 5: Solve for x
    x = 74,464,361,563.83/418,220.16
  6. Step 6: Final answer
    x = 178,050.63

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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.