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Finding the Fourth Proportional to 418,515.80, 627,773.70 and 292,544.60

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Solution

The fourth proportional to 418,515.80, 627,773.70 and 292,544.60 is: 438,816.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,515.80 : 627,773.70 = 292,544.60 : x
  2. Step 2: Convert to fraction form
    418,515.80/627,773.70 = 292,544.60/x
  3. Step 3: Cross multiply
    418,515.80x = 627,773.70 × 292,544.60
  4. Step 4: Simplify right side
    418,515.80x = 183,651,805,957.02
  5. Step 5: Solve for x
    x = 183,651,805,957.02/418,515.80
  6. Step 6: Final answer
    x = 438,816.90

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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.