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Finding the Fourth Proportional to 15,197.34, 20,972.14 and 8,484.62

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Solution

The fourth proportional to 15,197.34, 20,972.14 and 8,484.62 is: 11,708.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,197.34 : 20,972.14 = 8,484.62 : x
  2. Step 2: Convert to fraction form
    15,197.34/20,972.14 = 8,484.62/x
  3. Step 3: Cross multiply
    15,197.34x = 20,972.14 × 8,484.62
  4. Step 4: Simplify right side
    15,197.34x = 177,940,638.49
  5. Step 5: Solve for x
    x = 177,940,638.49/15,197.34
  6. Step 6: Final answer
    x = 11,708.67

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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.