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Finding the Fourth Proportional to 19,792.64, 29,700.48 and 7,481.60

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Solution

The fourth proportional to 19,792.64, 29,700.48 and 7,481.60 is: 11,226.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,792.64 : 29,700.48 = 7,481.60 : x
  2. Step 2: Convert to fraction form
    19,792.64/29,700.48 = 7,481.60/x
  3. Step 3: Cross multiply
    19,792.64x = 29,700.48 × 7,481.60
  4. Step 4: Simplify right side
    19,792.64x = 222,207,111.17
  5. Step 5: Solve for x
    x = 222,207,111.17/19,792.64
  6. Step 6: Final answer
    x = 11,226.75

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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.