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Finding the Fourth Proportional to 15,916.59, 21,964.91 and 8,842.95

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Solution

The fourth proportional to 15,916.59, 21,964.91 and 8,842.95 is: 12,203.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,916.59 : 21,964.91 = 8,842.95 : x
  2. Step 2: Convert to fraction form
    15,916.59/21,964.91 = 8,842.95/x
  3. Step 3: Cross multiply
    15,916.59x = 21,964.91 × 8,842.95
  4. Step 4: Simplify right side
    15,916.59x = 194,234,556.67
  5. Step 5: Solve for x
    x = 194,234,556.67/15,916.59
  6. Step 6: Final answer
    x = 12,203.28

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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.