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Finding the Fourth Proportional to 9,281.75, 13,922.63 and 3,125.75

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Solution

The fourth proportional to 9,281.75, 13,922.63 and 3,125.75 is: 4,688.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,281.75 : 13,922.63 = 3,125.75 : x
  2. Step 2: Convert to fraction form
    9,281.75/13,922.63 = 3,125.75/x
  3. Step 3: Cross multiply
    9,281.75x = 13,922.63 × 3,125.75
  4. Step 4: Simplify right side
    9,281.75x = 43,518,660.72
  5. Step 5: Solve for x
    x = 43,518,660.72/9,281.75
  6. Step 6: Final answer
    x = 4,688.63

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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.