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Finding the Fourth Proportional to 79,704,021.80, 119,367,075.90 and 79,704,021.80

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Solution

The fourth proportional to 79,704,021.80, 119,367,075.90 and 79,704,021.80 is: 119,367,075.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,704,021.80 : 119,367,075.90 = 79,704,021.80 : x
  2. Step 2: Convert to fraction form
    79,704,021.80/119,367,075.90 = 79,704,021.80/x
  3. Step 3: Cross multiply
    79,704,021.80x = 119,367,075.90 × 79,704,021.80
  4. Step 4: Simplify right side
    79,704,021.80x = 9,514,036,019,735,854
  5. Step 5: Solve for x
    x = 9,514,036,019,735,854/79,704,021.80
  6. Step 6: Final answer
    x = 119,367,075.90

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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.