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Finding the Fourth Proportional to 6,791,868.96, 9,373,465.92 and 3,891,644.64

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Solution

The fourth proportional to 6,791,868.96, 9,373,465.92 and 3,891,644.64 is: 5,370,863.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,791,868.96 : 9,373,465.92 = 3,891,644.64 : x
  2. Step 2: Convert to fraction form
    6,791,868.96/9,373,465.92 = 3,891,644.64/x
  3. Step 3: Cross multiply
    6,791,868.96x = 9,373,465.92 × 3,891,644.64
  4. Step 4: Simplify right side
    6,791,868.96x = 36,478,198,405,790.67
  5. Step 5: Solve for x
    x = 36,478,198,405,790.67/6,791,868.96
  6. Step 6: Final answer
    x = 5,370,863.10

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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.