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Finding the Fourth Proportional to 627,339,991.80, 941,009,987.70 and 577,175,460.60

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Solution

The fourth proportional to 627,339,991.80, 941,009,987.70 and 577,175,460.60 is: 865,763,190.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,339,991.80 : 941,009,987.70 = 577,175,460.60 : x
  2. Step 2: Convert to fraction form
    627,339,991.80/941,009,987.70 = 577,175,460.60/x
  3. Step 3: Cross multiply
    627,339,991.80x = 941,009,987.70 × 577,175,460.60
  4. Step 4: Simplify right side
    627,339,991.80x = 543,127,873,079,947,904
  5. Step 5: Solve for x
    x = 543,127,873,079,947,904/627,339,991.80
  6. Step 6: Final answer
    x = 865,763,190.90

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Double scale
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Similar ratio
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1.5x scale

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.