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Finding the Fourth Proportional to 21,607.95, 32,388.49 and 11,063.51

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Solution

The fourth proportional to 21,607.95, 32,388.49 and 11,063.51 is: 16,583.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,607.95 : 32,388.49 = 11,063.51 : x
  2. Step 2: Convert to fraction form
    21,607.95/32,388.49 = 11,063.51/x
  3. Step 3: Cross multiply
    21,607.95x = 32,388.49 × 11,063.51
  4. Step 4: Simplify right side
    21,607.95x = 358,330,383.00
  5. Step 5: Solve for x
    x = 358,330,383.00/21,607.95
  6. Step 6: Final answer
    x = 16,583.27

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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.