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Finding the Fourth Proportional to 699,384,063.12, 965,585,579.73 and 445,208,834.69

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Solution

The fourth proportional to 699,384,063.12, 965,585,579.73 and 445,208,834.69 is: 614,665,465.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,384,063.12 : 965,585,579.73 = 445,208,834.69 : x
  2. Step 2: Convert to fraction form
    699,384,063.12/965,585,579.73 = 445,208,834.69/x
  3. Step 3: Cross multiply
    699,384,063.12x = 965,585,579.73 × 445,208,834.69
  4. Step 4: Simplify right side
    699,384,063.12x = 429,887,230,745,061,376
  5. Step 5: Solve for x
    x = 429,887,230,745,061,376/699,384,063.12
  6. Step 6: Final answer
    x = 614,665,465.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.