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Finding the Fourth Proportional to 70,693.44, 106,039.08 and 18,102.48

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Solution

The fourth proportional to 70,693.44, 106,039.08 and 18,102.48 is: 27,153.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,693.44 : 106,039.08 = 18,102.48 : x
  2. Step 2: Convert to fraction form
    70,693.44/106,039.08 = 18,102.48/x
  3. Step 3: Cross multiply
    70,693.44x = 106,039.08 × 18,102.48
  4. Step 4: Simplify right side
    70,693.44x = 1,919,570,324.92
  5. Step 5: Solve for x
    x = 1,919,570,324.92/70,693.44
  6. Step 6: Final answer
    x = 27,153.44

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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.