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Finding the Fourth Proportional to 7,955.94, 11,938.54 and 3,276.42

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Solution

The fourth proportional to 7,955.94, 11,938.54 and 3,276.42 is: 4,916.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.94 : 11,938.54 = 3,276.42 : x
  2. Step 2: Convert to fraction form
    7,955.94/11,938.54 = 3,276.42/x
  3. Step 3: Cross multiply
    7,955.94x = 11,938.54 × 3,276.42
  4. Step 4: Simplify right side
    7,955.94x = 39,115,720.09
  5. Step 5: Solve for x
    x = 39,115,720.09/7,955.94
  6. Step 6: Final answer
    x = 4,916.54

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1.5x scale

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.