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Finding the Fourth Proportional to 844,907,772.80, 1,267,361,659.20 and 723,975,420.80

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Solution

The fourth proportional to 844,907,772.80, 1,267,361,659.20 and 723,975,420.80 is: 1,085,963,131.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    844,907,772.80 : 1,267,361,659.20 = 723,975,420.80 : x
  2. Step 2: Convert to fraction form
    844,907,772.80/1,267,361,659.20 = 723,975,420.80/x
  3. Step 3: Cross multiply
    844,907,772.80x = 1,267,361,659.20 × 723,975,420.80
  4. Step 4: Simplify right side
    844,907,772.80x = 917,538,690,525,106,176
  5. Step 5: Solve for x
    x = 917,538,690,525,106,176/844,907,772.80
  6. Step 6: Final answer
    x = 1,085,963,131.20

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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.