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Finding the Fourth Proportional to 13,700.92, 18,874.47 and 13,033.90

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Solution

The fourth proportional to 13,700.92, 18,874.47 and 13,033.90 is: 17,955.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.92 : 18,874.47 = 13,033.90 : x
  2. Step 2: Convert to fraction form
    13,700.92/18,874.47 = 13,033.90/x
  3. Step 3: Cross multiply
    13,700.92x = 18,874.47 × 13,033.90
  4. Step 4: Simplify right side
    13,700.92x = 246,007,954.53
  5. Step 5: Solve for x
    x = 246,007,954.53/13,700.92
  6. Step 6: Final answer
    x = 17,955.58

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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.