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Finding the Fourth Proportional to 4,119,139.90, 6,178,709.85 and 4,119,139.90

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Solution

The fourth proportional to 4,119,139.90, 6,178,709.85 and 4,119,139.90 is: 6,178,709.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,119,139.90 : 6,178,709.85 = 4,119,139.90 : x
  2. Step 2: Convert to fraction form
    4,119,139.90/6,178,709.85 = 4,119,139.90/x
  3. Step 3: Cross multiply
    4,119,139.90x = 6,178,709.85 × 4,119,139.90
  4. Step 4: Simplify right side
    4,119,139.90x = 25,450,970,273,658.01
  5. Step 5: Solve for x
    x = 25,450,970,273,658.01/4,119,139.90
  6. Step 6: Final answer
    x = 6,178,709.85

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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.