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Finding the Fourth Proportional to 7,172.67, 9,900.27 and 5,048.67

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Solution

The fourth proportional to 7,172.67, 9,900.27 and 5,048.67 is: 6,968.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.67 : 9,900.27 = 5,048.67 : x
  2. Step 2: Convert to fraction form
    7,172.67/9,900.27 = 5,048.67/x
  3. Step 3: Cross multiply
    7,172.67x = 9,900.27 × 5,048.67
  4. Step 4: Simplify right side
    7,172.67x = 49,983,196.14
  5. Step 5: Solve for x
    x = 49,983,196.14/7,172.67
  6. Step 6: Final answer
    x = 6,968.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.