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Finding the Fourth Proportional to 1,279,173,738.02, 1,765,227,236.94 and 714,662,859.92

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Solution

The fourth proportional to 1,279,173,738.02, 1,765,227,236.94 and 714,662,859.92 is: 986,216,577.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,173,738.02 : 1,765,227,236.94 = 714,662,859.92 : x
  2. Step 2: Convert to fraction form
    1,279,173,738.02/1,765,227,236.94 = 714,662,859.92/x
  3. Step 3: Cross multiply
    1,279,173,738.02x = 1,765,227,236.94 × 714,662,859.92
  4. Step 4: Simplify right side
    1,279,173,738.02x = 1,261,542,345,560,219,904
  5. Step 5: Solve for x
    x = 1,261,542,345,560,219,904/1,279,173,738.02
  6. Step 6: Final answer
    x = 986,216,577.20

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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.