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Finding the Fourth Proportional to 7,763.72, 10,690.58 and 6,954.60

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Solution

The fourth proportional to 7,763.72, 10,690.58 and 6,954.60 is: 9,576.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,763.72 : 10,690.58 = 6,954.60 : x
  2. Step 2: Convert to fraction form
    7,763.72/10,690.58 = 6,954.60/x
  3. Step 3: Cross multiply
    7,763.72x = 10,690.58 × 6,954.60
  4. Step 4: Simplify right side
    7,763.72x = 74,348,707.67
  5. Step 5: Solve for x
    x = 74,348,707.67/7,763.72
  6. Step 6: Final answer
    x = 9,576.43

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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.