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Finding the Fourth Proportional to 25,636.88, 38,449.56 and 9,220.88

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Solution

The fourth proportional to 25,636.88, 38,449.56 and 9,220.88 is: 13,829.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,636.88 : 38,449.56 = 9,220.88 : x
  2. Step 2: Convert to fraction form
    25,636.88/38,449.56 = 9,220.88/x
  3. Step 3: Cross multiply
    25,636.88x = 38,449.56 × 9,220.88
  4. Step 4: Simplify right side
    25,636.88x = 354,538,778.81
  5. Step 5: Solve for x
    x = 354,538,778.81/25,636.88
  6. Step 6: Final answer
    x = 13,829.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.