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Finding the Fourth Proportional to 21,955.98, 32,935.50 and 8,808.34

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Solution

The fourth proportional to 21,955.98, 32,935.50 and 8,808.34 is: 13,213.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.98 : 32,935.50 = 8,808.34 : x
  2. Step 2: Convert to fraction form
    21,955.98/32,935.50 = 8,808.34/x
  3. Step 3: Cross multiply
    21,955.98x = 32,935.50 × 8,808.34
  4. Step 4: Simplify right side
    21,955.98x = 290,107,082.07
  5. Step 5: Solve for x
    x = 290,107,082.07/21,955.98
  6. Step 6: Final answer
    x = 13,213.12

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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.