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Finding the Fourth Proportional to 79,723,909.80, 119,396,907.90 and 79,723,909.80

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Solution

The fourth proportional to 79,723,909.80, 119,396,907.90 and 79,723,909.80 is: 119,396,907.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,723,909.80 : 119,396,907.90 = 79,723,909.80 : x
  2. Step 2: Convert to fraction form
    79,723,909.80/119,396,907.90 = 79,723,909.80/x
  3. Step 3: Cross multiply
    79,723,909.80x = 119,396,907.90 × 79,723,909.80
  4. Step 4: Simplify right side
    79,723,909.80x = 9,518,788,315,818,508
  5. Step 5: Solve for x
    x = 9,518,788,315,818,508/79,723,909.80
  6. Step 6: Final answer
    x = 119,396,907.90

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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.