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Finding the Fourth Proportional to 627,748.80, 866,208.48 and 401,233.60

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Solution

The fourth proportional to 627,748.80, 866,208.48 and 401,233.60 is: 553,648.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,748.80 : 866,208.48 = 401,233.60 : x
  2. Step 2: Convert to fraction form
    627,748.80/866,208.48 = 401,233.60/x
  3. Step 3: Cross multiply
    627,748.80x = 866,208.48 × 401,233.60
  4. Step 4: Simplify right side
    627,748.80x = 347,551,946,780.93
  5. Step 5: Solve for x
    x = 347,551,946,780.93/627,748.80
  6. Step 6: Final answer
    x = 553,648.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.