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Finding the Fourth Proportional to 21,880.94, 32,824.44 and 7,085.07

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Solution

The fourth proportional to 21,880.94, 32,824.44 and 7,085.07 is: 10,628.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,880.94 : 32,824.44 = 7,085.07 : x
  2. Step 2: Convert to fraction form
    21,880.94/32,824.44 = 7,085.07/x
  3. Step 3: Cross multiply
    21,880.94x = 32,824.44 × 7,085.07
  4. Step 4: Simplify right side
    21,880.94x = 232,563,455.11
  5. Step 5: Solve for x
    x = 232,563,455.11/21,880.94
  6. Step 6: Final answer
    x = 10,628.59

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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.