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Finding the Fourth Proportional to 987,532,399.53, 1,481,627,888.19 and 656,843,096.07

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Solution

The fourth proportional to 987,532,399.53, 1,481,627,888.19 and 656,843,096.07 is: 985,483,665.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,532,399.53 : 1,481,627,888.19 = 656,843,096.07 : x
  2. Step 2: Convert to fraction form
    987,532,399.53/1,481,627,888.19 = 656,843,096.07/x
  3. Step 3: Cross multiply
    987,532,399.53x = 1,481,627,888.19 × 656,843,096.07
  4. Step 4: Simplify right side
    987,532,399.53x = 973,197,049,302,375,552
  5. Step 5: Solve for x
    x = 973,197,049,302,375,552/987,532,399.53
  6. Step 6: Final answer
    x = 985,483,665.92

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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.