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Finding the Fourth Proportional to 1,144.11, 1,716.16 and 413.67

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Solution

The fourth proportional to 1,144.11, 1,716.16 and 413.67 is: 620.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.11 : 1,716.16 = 413.67 : x
  2. Step 2: Convert to fraction form
    1,144.11/1,716.16 = 413.67/x
  3. Step 3: Cross multiply
    1,144.11x = 1,716.16 × 413.67
  4. Step 4: Simplify right side
    1,144.11x = 709,914.29
  5. Step 5: Solve for x
    x = 709,914.29/1,144.11
  6. Step 6: Final answer
    x = 620.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,145.11, 1,717.66 and 414.67
Similar ratio
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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.