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Finding the Fourth Proportional to 987,532,402.03, 1,481,627,891.94 and 656,843,098.57

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Solution

The fourth proportional to 987,532,402.03, 1,481,627,891.94 and 656,843,098.57 is: 985,483,669.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,532,402.03 : 1,481,627,891.94 = 656,843,098.57 : x
  2. Step 2: Convert to fraction form
    987,532,402.03/1,481,627,891.94 = 656,843,098.57/x
  3. Step 3: Cross multiply
    987,532,402.03x = 1,481,627,891.94 × 656,843,098.57
  4. Step 4: Simplify right side
    987,532,402.03x = 973,197,055,469,606,784
  5. Step 5: Solve for x
    x = 973,197,055,469,606,784/987,532,402.03
  6. Step 6: Final answer
    x = 985,483,669.67

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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.