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Finding the Third Proportional to 53,368.50 and 83,715

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Solution

The third proportional to 53,368.50 and 83,715 is: 131,317.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,368.50 : 83,715 = 83,715 : x
  2. Step 2: Convert to fraction form
    53,368.50/83,715 = 83,715/x
  3. Step 3: Cross multiply
    53,368.50x = 83,715 × 83,715
  4. Step 4: Simplify right side
    53,368.50x = 7,008,201,225
  5. Step 5: Solve for x
    x = 7,008,201,225/53,368.50
  6. Step 6: Final answer
    x = 131,317.19

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.