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Finding the Fourth Proportional to 8,699.84, 12,004.44 and 5,716.88

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Solution

The fourth proportional to 8,699.84, 12,004.44 and 5,716.88 is: 7,888.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.84 : 12,004.44 = 5,716.88 : x
  2. Step 2: Convert to fraction form
    8,699.84/12,004.44 = 5,716.88/x
  3. Step 3: Cross multiply
    8,699.84x = 12,004.44 × 5,716.88
  4. Step 4: Simplify right side
    8,699.84x = 68,627,942.95
  5. Step 5: Solve for x
    x = 68,627,942.95/8,699.84
  6. Step 6: Final answer
    x = 7,888.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.