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Finding the Fourth Proportional to 673,857,367.69, 929,971,288 and 372,436,194.94

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Solution

The fourth proportional to 673,857,367.69, 929,971,288 and 372,436,194.94 is: 513,988,544.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,857,367.69 : 929,971,288 = 372,436,194.94 : x
  2. Step 2: Convert to fraction form
    673,857,367.69/929,971,288 = 372,436,194.94/x
  3. Step 3: Cross multiply
    673,857,367.69x = 929,971,288 × 372,436,194.94
  4. Step 4: Simplify right side
    673,857,367.69x = 346,354,967,906,170,880
  5. Step 5: Solve for x
    x = 346,354,967,906,170,880/673,857,367.69
  6. Step 6: Final answer
    x = 513,988,544.93

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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.