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Finding the Fourth Proportional to 70,855,981.20, 106,302,634.20 and 25,413,037.20

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Solution

The fourth proportional to 70,855,981.20, 106,302,634.20 and 25,413,037.20 is: 38,126,249.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,855,981.20 : 106,302,634.20 = 25,413,037.20 : x
  2. Step 2: Convert to fraction form
    70,855,981.20/106,302,634.20 = 25,413,037.20/x
  3. Step 3: Cross multiply
    70,855,981.20x = 106,302,634.20 × 25,413,037.20
  4. Step 4: Simplify right side
    70,855,981.20x = 2,701,472,797,382,592
  5. Step 5: Solve for x
    x = 2,701,472,797,382,592/70,855,981.20
  6. Step 6: Final answer
    x = 38,126,249.21

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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.