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Finding the Fourth Proportional to 21,756.36, 32,627.54 and 6,961.74

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Solution

The fourth proportional to 21,756.36, 32,627.54 and 6,961.74 is: 10,440.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.36 : 32,627.54 = 6,961.74 : x
  2. Step 2: Convert to fraction form
    21,756.36/32,627.54 = 6,961.74/x
  3. Step 3: Cross multiply
    21,756.36x = 32,627.54 × 6,961.74
  4. Step 4: Simplify right side
    21,756.36x = 227,144,450.32
  5. Step 5: Solve for x
    x = 227,144,450.32/21,756.36
  6. Step 6: Final answer
    x = 10,440.37

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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.