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Finding the Fourth Proportional to 6,771,974.31, 9,345,438.95 and 3,716,472.87

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Solution

The fourth proportional to 6,771,974.31, 9,345,438.95 and 3,716,472.87 is: 5,128,795.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,771,974.31 : 9,345,438.95 = 3,716,472.87 : x
  2. Step 2: Convert to fraction form
    6,771,974.31/9,345,438.95 = 3,716,472.87/x
  3. Step 3: Cross multiply
    6,771,974.31x = 9,345,438.95 × 3,716,472.87
  4. Step 4: Simplify right side
    6,771,974.31x = 34,732,070,297,333.93
  5. Step 5: Solve for x
    x = 34,732,070,297,333.93/6,771,974.31
  6. Step 6: Final answer
    x = 5,128,795.34

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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.