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Finding the Fourth Proportional to 21,922,431.30, 30,741,792.30 and 21,922,431.30

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Solution

The fourth proportional to 21,922,431.30, 30,741,792.30 and 21,922,431.30 is: 30,741,792.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,922,431.30 : 30,741,792.30 = 21,922,431.30 : x
  2. Step 2: Convert to fraction form
    21,922,431.30/30,741,792.30 = 21,922,431.30/x
  3. Step 3: Cross multiply
    21,922,431.30x = 30,741,792.30 × 21,922,431.30
  4. Step 4: Simplify right side
    21,922,431.30x = 673,934,829,735,619
  5. Step 5: Solve for x
    x = 673,934,829,735,619/21,922,431.30
  6. Step 6: Final answer
    x = 30,741,792.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.