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Finding the Fourth Proportional to 16,392,931.40, 24,568,401.90 and 12,587,551.40

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Solution

The fourth proportional to 16,392,931.40, 24,568,401.90 and 12,587,551.40 is: 18,865,205.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,392,931.40 : 24,568,401.90 = 12,587,551.40 : x
  2. Step 2: Convert to fraction form
    16,392,931.40/24,568,401.90 = 12,587,551.40/x
  3. Step 3: Cross multiply
    16,392,931.40x = 24,568,401.90 × 12,587,551.40
  4. Step 4: Simplify right side
    16,392,931.40x = 309,256,021,732,107.62
  5. Step 5: Solve for x
    x = 309,256,021,732,107.62/16,392,931.40
  6. Step 6: Final answer
    x = 18,865,205.63

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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.