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Finding the Fourth Proportional to 34,683.86, 47,863.81 and 18,768.48

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Solution

The fourth proportional to 34,683.86, 47,863.81 and 18,768.48 is: 25,900.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,683.86 : 47,863.81 = 18,768.48 : x
  2. Step 2: Convert to fraction form
    34,683.86/47,863.81 = 18,768.48/x
  3. Step 3: Cross multiply
    34,683.86x = 47,863.81 × 18,768.48
  4. Step 4: Simplify right side
    34,683.86x = 898,330,960.71
  5. Step 5: Solve for x
    x = 898,330,960.71/34,683.86
  6. Step 6: Final answer
    x = 25,900.55

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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.