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Finding the Fourth Proportional to 9,355.75, 14,039.70 and 4,738.75

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Solution

The fourth proportional to 9,355.75, 14,039.70 and 4,738.75 is: 7,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.75 : 14,039.70 = 4,738.75 : x
  2. Step 2: Convert to fraction form
    9,355.75/14,039.70 = 4,738.75/x
  3. Step 3: Cross multiply
    9,355.75x = 14,039.70 × 4,738.75
  4. Step 4: Simplify right side
    9,355.75x = 66,530,628.38
  5. Step 5: Solve for x
    x = 66,530,628.38/9,355.75
  6. Step 6: Final answer
    x = 7,111.20

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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.