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Finding the Fourth Proportional to 7,393,986.80, 11,072,317.80 and 4,855,900.40

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Solution

The fourth proportional to 7,393,986.80, 11,072,317.80 and 4,855,900.40 is: 7,271,594.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,393,986.80 : 11,072,317.80 = 4,855,900.40 : x
  2. Step 2: Convert to fraction form
    7,393,986.80/11,072,317.80 = 4,855,900.40/x
  3. Step 3: Cross multiply
    7,393,986.80x = 11,072,317.80 × 4,855,900.40
  4. Step 4: Simplify right side
    7,393,986.80x = 53,766,072,433,947.12
  5. Step 5: Solve for x
    x = 53,766,072,433,947.12/7,393,986.80
  6. Step 6: Final answer
    x = 7,271,594.32

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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.