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Finding the Fourth Proportional to 69,209,215.20, 103,813,822.80 and 69,209,215.20

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Solution

The fourth proportional to 69,209,215.20, 103,813,822.80 and 69,209,215.20 is: 103,813,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,209,215.20 : 103,813,822.80 = 69,209,215.20 : x
  2. Step 2: Convert to fraction form
    69,209,215.20/103,813,822.80 = 69,209,215.20/x
  3. Step 3: Cross multiply
    69,209,215.20x = 103,813,822.80 × 69,209,215.20
  4. Step 4: Simplify right side
    69,209,215.20x = 7,184,873,202,899,867
  5. Step 5: Solve for x
    x = 7,184,873,202,899,867/69,209,215.20
  6. Step 6: Final answer
    x = 103,813,822.80

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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.