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Finding the Fourth Proportional to 80,644,537.80, 120,966,806.70 and 80,644,537.80

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Solution

The fourth proportional to 80,644,537.80, 120,966,806.70 and 80,644,537.80 is: 120,966,806.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,644,537.80 : 120,966,806.70 = 80,644,537.80 : x
  2. Step 2: Convert to fraction form
    80,644,537.80/120,966,806.70 = 80,644,537.80/x
  3. Step 3: Cross multiply
    80,644,537.80x = 120,966,806.70 × 80,644,537.80
  4. Step 4: Simplify right side
    80,644,537.80x = 9,755,312,215,463,444
  5. Step 5: Solve for x
    x = 9,755,312,215,463,444/80,644,537.80
  6. Step 6: Final answer
    x = 120,966,806.70

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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.