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Finding the Fourth Proportional to 15,916.33, 21,964.33 and 8,842.60

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Solution

The fourth proportional to 15,916.33, 21,964.33 and 8,842.60 is: 12,202.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,916.33 : 21,964.33 = 8,842.60 : x
  2. Step 2: Convert to fraction form
    15,916.33/21,964.33 = 8,842.60/x
  3. Step 3: Cross multiply
    15,916.33x = 21,964.33 × 8,842.60
  4. Step 4: Simplify right side
    15,916.33x = 194,221,784.46
  5. Step 5: Solve for x
    x = 194,221,784.46/15,916.33
  6. Step 6: Final answer
    x = 12,202.67

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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.