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Finding the Third Proportional to 58,942.50 and 90,135

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Solution

The third proportional to 58,942.50 and 90,135 is: 137,834.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,942.50 : 90,135 = 90,135 : x
  2. Step 2: Convert to fraction form
    58,942.50/90,135 = 90,135/x
  3. Step 3: Cross multiply
    58,942.50x = 90,135 × 90,135
  4. Step 4: Simplify right side
    58,942.50x = 8,124,318,225
  5. Step 5: Solve for x
    x = 8,124,318,225/58,942.50
  6. Step 6: Final answer
    x = 137,834.64

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.