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Finding the Fourth Proportional to 4,828.68, 6,672.98 and 3,930.68

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Solution

The fourth proportional to 4,828.68, 6,672.98 and 3,930.68 is: 5,431.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,828.68 : 6,672.98 = 3,930.68 : x
  2. Step 2: Convert to fraction form
    4,828.68/6,672.98 = 3,930.68/x
  3. Step 3: Cross multiply
    4,828.68x = 6,672.98 × 3,930.68
  4. Step 4: Simplify right side
    4,828.68x = 26,229,349.03
  5. Step 5: Solve for x
    x = 26,229,349.03/4,828.68
  6. Step 6: Final answer
    x = 5,431.99

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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.