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Finding the Fourth Proportional to 7,612.12, 11,391.18 and 4,483

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Solution

The fourth proportional to 7,612.12, 11,391.18 and 4,483 is: 6,708.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,612.12 : 11,391.18 = 4,483 : x
  2. Step 2: Convert to fraction form
    7,612.12/11,391.18 = 4,483/x
  3. Step 3: Cross multiply
    7,612.12x = 11,391.18 × 4,483
  4. Step 4: Simplify right side
    7,612.12x = 51,066,659.94
  5. Step 5: Solve for x
    x = 51,066,659.94/7,612.12
  6. Step 6: Final answer
    x = 6,708.60

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1.5x scale

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.