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Finding the Fourth Proportional to 6,977,153.52, 9,628,247.52 and 3,879,661.68

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Solution

The fourth proportional to 6,977,153.52, 9,628,247.52 and 3,879,661.68 is: 5,353,808.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,977,153.52 : 9,628,247.52 = 3,879,661.68 : x
  2. Step 2: Convert to fraction form
    6,977,153.52/9,628,247.52 = 3,879,661.68/x
  3. Step 3: Cross multiply
    6,977,153.52x = 9,628,247.52 × 3,879,661.68
  4. Step 4: Simplify right side
    6,977,153.52x = 37,354,342,948,899.03
  5. Step 5: Solve for x
    x = 37,354,342,948,899.03/6,977,153.52
  6. Step 6: Final answer
    x = 5,353,808.37

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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.