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Finding the Fourth Proportional to 21,954.16, 32,922.96 and 7,159.60

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Solution

The fourth proportional to 21,954.16, 32,922.96 and 7,159.60 is: 10,736.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,954.16 : 32,922.96 = 7,159.60 : x
  2. Step 2: Convert to fraction form
    21,954.16/32,922.96 = 7,159.60/x
  3. Step 3: Cross multiply
    21,954.16x = 32,922.96 × 7,159.60
  4. Step 4: Simplify right side
    21,954.16x = 235,715,224.42
  5. Step 5: Solve for x
    x = 235,715,224.42/21,954.16
  6. Step 6: Final answer
    x = 10,736.70

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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.