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Finding the Fourth Proportional to 70,612.75, 105,919.03 and 18,022.24

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Solution

The fourth proportional to 70,612.75, 105,919.03 and 18,022.24 is: 27,033.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,612.75 : 105,919.03 = 18,022.24 : x
  2. Step 2: Convert to fraction form
    70,612.75/105,919.03 = 18,022.24/x
  3. Step 3: Cross multiply
    70,612.75x = 105,919.03 × 18,022.24
  4. Step 4: Simplify right side
    70,612.75x = 1,908,898,179.23
  5. Step 5: Solve for x
    x = 1,908,898,179.23/70,612.75
  6. Step 6: Final answer
    x = 27,033.34

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1.5x scale

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.