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Finding the Third Proportional to 11,737.50 and 15,237

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Solution

The third proportional to 11,737.50 and 15,237 is: 19,779.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,737.50 : 15,237 = 15,237 : x
  2. Step 2: Convert to fraction form
    11,737.50/15,237 = 15,237/x
  3. Step 3: Cross multiply
    11,737.50x = 15,237 × 15,237
  4. Step 4: Simplify right side
    11,737.50x = 232,166,169
  5. Step 5: Solve for x
    x = 232,166,169/11,737.50
  6. Step 6: Final answer
    x = 19,779.87

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.