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Finding the Fourth Proportional to 4,885.84, 7,318.99 and 2,936.98

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Solution

The fourth proportional to 4,885.84, 7,318.99 and 2,936.98 is: 4,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,885.84 : 7,318.99 = 2,936.98 : x
  2. Step 2: Convert to fraction form
    4,885.84/7,318.99 = 2,936.98/x
  3. Step 3: Cross multiply
    4,885.84x = 7,318.99 × 2,936.98
  4. Step 4: Simplify right side
    4,885.84x = 21,495,727.25
  5. Step 5: Solve for x
    x = 21,495,727.25/4,885.84
  6. Step 6: Final answer
    x = 4,399.60

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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.