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Finding the Third Proportional to 72,683.50 and 106,633

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Solution

The third proportional to 72,683.50 and 106,633 is: 156,439.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,683.50 : 106,633 = 106,633 : x
  2. Step 2: Convert to fraction form
    72,683.50/106,633 = 106,633/x
  3. Step 3: Cross multiply
    72,683.50x = 106,633 × 106,633
  4. Step 4: Simplify right side
    72,683.50x = 11,370,596,689
  5. Step 5: Solve for x
    x = 11,370,596,689/72,683.50
  6. Step 6: Final answer
    x = 156,439.86

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.