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Finding the Fourth Proportional to 15,568.98, 21,485.08 and 8,495.25

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Solution

The fourth proportional to 15,568.98, 21,485.08 and 8,495.25 is: 11,723.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,568.98 : 21,485.08 = 8,495.25 : x
  2. Step 2: Convert to fraction form
    15,568.98/21,485.08 = 8,495.25/x
  3. Step 3: Cross multiply
    15,568.98x = 21,485.08 × 8,495.25
  4. Step 4: Simplify right side
    15,568.98x = 182,520,975.97
  5. Step 5: Solve for x
    x = 182,520,975.97/15,568.98
  6. Step 6: Final answer
    x = 11,723.38

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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.