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Finding the Fourth Proportional to 7,773.42, 10,729.06 and 4,940.25

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Solution

The fourth proportional to 7,773.42, 10,729.06 and 4,940.25 is: 6,818.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,773.42 : 10,729.06 = 4,940.25 : x
  2. Step 2: Convert to fraction form
    7,773.42/10,729.06 = 4,940.25/x
  3. Step 3: Cross multiply
    7,773.42x = 10,729.06 × 4,940.25
  4. Step 4: Simplify right side
    7,773.42x = 53,004,186.08
  5. Step 5: Solve for x
    x = 53,004,186.08/7,773.42
  6. Step 6: Final answer
    x = 6,818.64

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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.