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Finding the Fourth Proportional to 1,120,368,631.80, 1,677,529,638.90 and 1,120,368,631.80

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Solution

The fourth proportional to 1,120,368,631.80, 1,677,529,638.90 and 1,120,368,631.80 is: 1,677,529,638.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,368,631.80 : 1,677,529,638.90 = 1,120,368,631.80 : x
  2. Step 2: Convert to fraction form
    1,120,368,631.80/1,677,529,638.90 = 1,120,368,631.80/x
  3. Step 3: Cross multiply
    1,120,368,631.80x = 1,677,529,638.90 × 1,120,368,631.80
  4. Step 4: Simplify right side
    1,120,368,631.80x = 1,879,451,586,338,341,120
  5. Step 5: Solve for x
    x = 1,879,451,586,338,341,120/1,120,368,631.80
  6. Step 6: Final answer
    x = 1,677,529,638.90

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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.