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Finding the Fourth Proportional to 14,915.07, 20,583.14 and 8,201.07

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Solution

The fourth proportional to 14,915.07, 20,583.14 and 8,201.07 is: 11,317.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,915.07 : 20,583.14 = 8,201.07 : x
  2. Step 2: Convert to fraction form
    14,915.07/20,583.14 = 8,201.07/x
  3. Step 3: Cross multiply
    14,915.07x = 20,583.14 × 8,201.07
  4. Step 4: Simplify right side
    14,915.07x = 168,803,811.91
  5. Step 5: Solve for x
    x = 168,803,811.91/14,915.07
  6. Step 6: Final answer
    x = 11,317.67

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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.