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Finding the Fourth Proportional to 275,963,607.20, 413,945,410.80 and 262,526,679.20

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Solution

The fourth proportional to 275,963,607.20, 413,945,410.80 and 262,526,679.20 is: 393,790,018.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,963,607.20 : 413,945,410.80 = 262,526,679.20 : x
  2. Step 2: Convert to fraction form
    275,963,607.20/413,945,410.80 = 262,526,679.20/x
  3. Step 3: Cross multiply
    275,963,607.20x = 413,945,410.80 × 262,526,679.20
  4. Step 4: Simplify right side
    275,963,607.20x = 108,671,714,067,403,808
  5. Step 5: Solve for x
    x = 108,671,714,067,403,808/275,963,607.20
  6. Step 6: Final answer
    x = 393,790,018.80

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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.