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Finding the Fourth Proportional to 21,754.55, 32,615.87 and 6,954.95

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Solution

The fourth proportional to 21,754.55, 32,615.87 and 6,954.95 is: 10,427.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,754.55 : 32,615.87 = 6,954.95 : x
  2. Step 2: Convert to fraction form
    21,754.55/32,615.87 = 6,954.95/x
  3. Step 3: Cross multiply
    21,754.55x = 32,615.87 × 6,954.95
  4. Step 4: Simplify right side
    21,754.55x = 226,841,809.21
  5. Step 5: Solve for x
    x = 226,841,809.21/21,754.55
  6. Step 6: Final answer
    x = 10,427.33

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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.