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Finding the Fourth Proportional to 7,079,385,813.80, 10,619,078,720.70 and 7,079,385,813.80

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Solution

The fourth proportional to 7,079,385,813.80, 10,619,078,720.70 and 7,079,385,813.80 is: 10,619,078,720.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079,385,813.80 : 10,619,078,720.70 = 7,079,385,813.80 : x
  2. Step 2: Convert to fraction form
    7,079,385,813.80/10,619,078,720.70 = 7,079,385,813.80/x
  3. Step 3: Cross multiply
    7,079,385,813.80x = 10,619,078,720.70 × 7,079,385,813.80
  4. Step 4: Simplify right side
    7,079,385,813.80x = 75,176,555,250,949,046,272
  5. Step 5: Solve for x
    x = 75,176,555,250,949,046,272/7,079,385,813.80
  6. Step 6: Final answer
    x = 10,619,078,720.70

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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.