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Finding the Fourth Proportional to 39,103,678.30, 54,858,523.70 and 39,103,678.30

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Solution

The fourth proportional to 39,103,678.30, 54,858,523.70 and 39,103,678.30 is: 54,858,523.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,103,678.30 : 54,858,523.70 = 39,103,678.30 : x
  2. Step 2: Convert to fraction form
    39,103,678.30/54,858,523.70 = 39,103,678.30/x
  3. Step 3: Cross multiply
    39,103,678.30x = 54,858,523.70 × 39,103,678.30
  4. Step 4: Simplify right side
    39,103,678.30x = 2,145,170,062,777,725.75
  5. Step 5: Solve for x
    x = 2,145,170,062,777,725.75/39,103,678.30
  6. Step 6: Final answer
    x = 54,858,523.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.