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Finding the Fourth Proportional to 8,868,698.92, 12,236,488.34 and 5,195,640.97

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Solution

The fourth proportional to 8,868,698.92, 12,236,488.34 and 5,195,640.97 is: 7,168,627.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868,698.92 : 12,236,488.34 = 5,195,640.97 : x
  2. Step 2: Convert to fraction form
    8,868,698.92/12,236,488.34 = 5,195,640.97/x
  3. Step 3: Cross multiply
    8,868,698.92x = 12,236,488.34 × 5,195,640.97
  4. Step 4: Simplify right side
    8,868,698.92x = 63,576,400,119,859.15
  5. Step 5: Solve for x
    x = 63,576,400,119,859.15/8,868,698.92
  6. Step 6: Final answer
    x = 7,168,627.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.