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Finding the Fourth Proportional to 1,252,520,897.41, 1,728,375,929.92 and 687,976,603.59

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Solution

The fourth proportional to 1,252,520,897.41, 1,728,375,929.92 and 687,976,603.59 is: 949,351,188.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252,520,897.41 : 1,728,375,929.92 = 687,976,603.59 : x
  2. Step 2: Convert to fraction form
    1,252,520,897.41/1,728,375,929.92 = 687,976,603.59/x
  3. Step 3: Cross multiply
    1,252,520,897.41x = 1,728,375,929.92 × 687,976,603.59
  4. Step 4: Simplify right side
    1,252,520,897.41x = 1,189,082,201,993,679,360
  5. Step 5: Solve for x
    x = 1,189,082,201,993,679,360/1,252,520,897.41
  6. Step 6: Final answer
    x = 949,351,188.04

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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.