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Finding the Fourth Proportional to 39,697,855.80, 55,690,372.20 and 39,697,855.80

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Solution

The fourth proportional to 39,697,855.80, 55,690,372.20 and 39,697,855.80 is: 55,690,372.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,697,855.80 : 55,690,372.20 = 39,697,855.80 : x
  2. Step 2: Convert to fraction form
    39,697,855.80/55,690,372.20 = 39,697,855.80/x
  3. Step 3: Cross multiply
    39,697,855.80x = 55,690,372.20 × 39,697,855.80
  4. Step 4: Simplify right side
    39,697,855.80x = 2,210,788,365,043,928.75
  5. Step 5: Solve for x
    x = 2,210,788,365,043,928.75/39,697,855.80
  6. Step 6: Final answer
    x = 55,690,372.20

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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.