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Finding the Fourth Proportional to 7,653.78, 10,561.94 and 4,674.60

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Solution

The fourth proportional to 7,653.78, 10,561.94 and 4,674.60 is: 6,450.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,653.78 : 10,561.94 = 4,674.60 : x
  2. Step 2: Convert to fraction form
    7,653.78/10,561.94 = 4,674.60/x
  3. Step 3: Cross multiply
    7,653.78x = 10,561.94 × 4,674.60
  4. Step 4: Simplify right side
    7,653.78x = 49,372,821.35
  5. Step 5: Solve for x
    x = 49,372,821.35/7,653.78
  6. Step 6: Final answer
    x = 6,450.78

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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.