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Finding the Fourth Proportional to 27,636.88, 41,447.72 and 7,641.60

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Solution

The fourth proportional to 27,636.88, 41,447.72 and 7,641.60 is: 11,460.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,636.88 : 41,447.72 = 7,641.60 : x
  2. Step 2: Convert to fraction form
    27,636.88/41,447.72 = 7,641.60/x
  3. Step 3: Cross multiply
    27,636.88x = 41,447.72 × 7,641.60
  4. Step 4: Simplify right side
    27,636.88x = 316,726,897.15
  5. Step 5: Solve for x
    x = 316,726,897.15/27,636.88
  6. Step 6: Final answer
    x = 11,460.30

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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.