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Finding the Fourth Proportional to 6,139,816.20, 8,608,339.80 and 6,139,816.20

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Solution

The fourth proportional to 6,139,816.20, 8,608,339.80 and 6,139,816.20 is: 8,608,339.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,139,816.20 : 8,608,339.80 = 6,139,816.20 : x
  2. Step 2: Convert to fraction form
    6,139,816.20/8,608,339.80 = 6,139,816.20/x
  3. Step 3: Cross multiply
    6,139,816.20x = 8,608,339.80 × 6,139,816.20
  4. Step 4: Simplify right side
    6,139,816.20x = 52,853,624,159,144.77
  5. Step 5: Solve for x
    x = 52,853,624,159,144.77/6,139,816.20
  6. Step 6: Final answer
    x = 8,608,339.80

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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.