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Finding the Fourth Proportional to 7,791,720.38, 11,687,746.57 and 2,674,128.03

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Solution

The fourth proportional to 7,791,720.38, 11,687,746.57 and 2,674,128.03 is: 4,011,249.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791,720.38 : 11,687,746.57 = 2,674,128.03 : x
  2. Step 2: Convert to fraction form
    7,791,720.38/11,687,746.57 = 2,674,128.03/x
  3. Step 3: Cross multiply
    7,791,720.38x = 11,687,746.57 × 2,674,128.03
  4. Step 4: Simplify right side
    7,791,720.38x = 31,254,530,659,858.99
  5. Step 5: Solve for x
    x = 31,254,530,659,858.99/7,791,720.38
  6. Step 6: Final answer
    x = 4,011,249.01

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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.