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Finding the Fourth Proportional to 15,031.98, 20,750.52 and 9,369.54

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Solution

The fourth proportional to 15,031.98, 20,750.52 and 9,369.54 is: 12,933.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,031.98 : 20,750.52 = 9,369.54 : x
  2. Step 2: Convert to fraction form
    15,031.98/20,750.52 = 9,369.54/x
  3. Step 3: Cross multiply
    15,031.98x = 20,750.52 × 9,369.54
  4. Step 4: Simplify right side
    15,031.98x = 194,422,861.06
  5. Step 5: Solve for x
    x = 194,422,861.06/15,031.98
  6. Step 6: Final answer
    x = 12,933.95

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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.