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Finding the Fourth Proportional to 15,917.23, 21,965.14 and 8,844.10

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Solution

The fourth proportional to 15,917.23, 21,965.14 and 8,844.10 is: 12,204.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,917.23 : 21,965.14 = 8,844.10 : x
  2. Step 2: Convert to fraction form
    15,917.23/21,965.14 = 8,844.10/x
  3. Step 3: Cross multiply
    15,917.23x = 21,965.14 × 8,844.10
  4. Step 4: Simplify right side
    15,917.23x = 194,261,894.67
  5. Step 5: Solve for x
    x = 194,261,894.67/15,917.23
  6. Step 6: Final answer
    x = 12,204.50

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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.