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Finding the Fourth Proportional to 247,345,662.80, 345,830,431.60 and 247,345,662.80

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Solution

The fourth proportional to 247,345,662.80, 345,830,431.60 and 247,345,662.80 is: 345,830,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,345,662.80 : 345,830,431.60 = 247,345,662.80 : x
  2. Step 2: Convert to fraction form
    247,345,662.80/345,830,431.60 = 247,345,662.80/x
  3. Step 3: Cross multiply
    247,345,662.80x = 345,830,431.60 × 247,345,662.80
  4. Step 4: Simplify right side
    247,345,662.80x = 85,539,657,320,512,080
  5. Step 5: Solve for x
    x = 85,539,657,320,512,080/247,345,662.80
  6. Step 6: Final answer
    x = 345,830,431.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.