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Finding the Fourth Proportional to 3,138,992.07, 4,708,930.77 and 1,008,361.86

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Solution

The fourth proportional to 3,138,992.07, 4,708,930.77 and 1,008,361.86 is: 1,512,684.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138,992.07 : 4,708,930.77 = 1,008,361.86 : x
  2. Step 2: Convert to fraction form
    3,138,992.07/4,708,930.77 = 1,008,361.86/x
  3. Step 3: Cross multiply
    3,138,992.07x = 4,708,930.77 × 1,008,361.86
  4. Step 4: Simplify right side
    3,138,992.07x = 4,748,306,189,848.43
  5. Step 5: Solve for x
    x = 4,748,306,189,848.43/3,138,992.07
  6. Step 6: Final answer
    x = 1,512,684.99

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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.