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Finding the Third Proportional to 31,818 and 48,133

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Solution

The third proportional to 31,818 and 48,133 is: 72,813.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,818 : 48,133 = 48,133 : x
  2. Step 2: Convert to fraction form
    31,818/48,133 = 48,133/x
  3. Step 3: Cross multiply
    31,818x = 48,133 × 48,133
  4. Step 4: Simplify right side
    31,818x = 2,316,785,689
  5. Step 5: Solve for x
    x = 2,316,785,689/31,818
  6. Step 6: Final answer
    x = 72,813.68

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.