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Finding the Third Proportional to 7,461 and 9,715.50

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Solution

The third proportional to 7,461 and 9,715.50 is: 12,651.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,461 : 9,715.50 = 9,715.50 : x
  2. Step 2: Convert to fraction form
    7,461/9,715.50 = 9,715.50/x
  3. Step 3: Cross multiply
    7,461x = 9,715.50 × 9,715.50
  4. Step 4: Simplify right side
    7,461x = 94,390,940.25
  5. Step 5: Solve for x
    x = 94,390,940.25/7,461
  6. Step 6: Final answer
    x = 12,651.25

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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.