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Finding the Fourth Proportional to 962,784,276.60, 1,328,647,604.94 and 522,751,128.60

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Solution

The fourth proportional to 962,784,276.60, 1,328,647,604.94 and 522,751,128.60 is: 721,399,436.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    962,784,276.60 : 1,328,647,604.94 = 522,751,128.60 : x
  2. Step 2: Convert to fraction form
    962,784,276.60/1,328,647,604.94 = 522,751,128.60/x
  3. Step 3: Cross multiply
    962,784,276.60x = 1,328,647,604.94 × 522,751,128.60
  4. Step 4: Simplify right side
    962,784,276.60x = 694,552,034,994,071,936
  5. Step 5: Solve for x
    x = 694,552,034,994,071,936/962,784,276.60
  6. Step 6: Final answer
    x = 721,399,436.90

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1.5x scale

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.