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Finding the Fourth Proportional to 8,808,863.70, 13,209,358.95 and 3,415,721.70

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Solution

The fourth proportional to 8,808,863.70, 13,209,358.95 and 3,415,721.70 is: 5,122,056.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,808,863.70 : 13,209,358.95 = 3,415,721.70 : x
  2. Step 2: Convert to fraction form
    8,808,863.70/13,209,358.95 = 3,415,721.70/x
  3. Step 3: Cross multiply
    8,808,863.70x = 13,209,358.95 × 3,415,721.70
  4. Step 4: Simplify right side
    8,808,863.70x = 45,119,494,008,604.22
  5. Step 5: Solve for x
    x = 45,119,494,008,604.22/8,808,863.70
  6. Step 6: Final answer
    x = 5,122,056.10

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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.