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Finding the Fourth Proportional to 7,956.75, 10,980.32 and 4,644.75

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Solution

The fourth proportional to 7,956.75, 10,980.32 and 4,644.75 is: 6,409.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,956.75 : 10,980.32 = 4,644.75 : x
  2. Step 2: Convert to fraction form
    7,956.75/10,980.32 = 4,644.75/x
  3. Step 3: Cross multiply
    7,956.75x = 10,980.32 × 4,644.75
  4. Step 4: Simplify right side
    7,956.75x = 51,000,841.32
  5. Step 5: Solve for x
    x = 51,000,841.32/7,956.75
  6. Step 6: Final answer
    x = 6,409.76

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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.