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Finding the Fourth Proportional to 3,066, 4,598.88 and 874.64

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Solution

The fourth proportional to 3,066, 4,598.88 and 874.64 is: 1,311.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,066 : 4,598.88 = 874.64 : x
  2. Step 2: Convert to fraction form
    3,066/4,598.88 = 874.64/x
  3. Step 3: Cross multiply
    3,066x = 4,598.88 × 874.64
  4. Step 4: Simplify right side
    3,066x = 4,022,364.40
  5. Step 5: Solve for x
    x = 4,022,364.40/3,066
  6. Step 6: Final answer
    x = 1,311.93

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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.