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Finding the Fourth Proportional to 22,315.92, 30,792.60 and 13,361.64

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Solution

The fourth proportional to 22,315.92, 30,792.60 and 13,361.64 is: 18,437.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,315.92 : 30,792.60 = 13,361.64 : x
  2. Step 2: Convert to fraction form
    22,315.92/30,792.60 = 13,361.64/x
  3. Step 3: Cross multiply
    22,315.92x = 30,792.60 × 13,361.64
  4. Step 4: Simplify right side
    22,315.92x = 411,439,635.86
  5. Step 5: Solve for x
    x = 411,439,635.86/22,315.92
  6. Step 6: Final answer
    x = 18,437.05

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1.5x scale

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.