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Finding the Fourth Proportional to 30,368.84, 41,910.04 and 17,621.06

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Solution

The fourth proportional to 30,368.84, 41,910.04 and 17,621.06 is: 24,317.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,368.84 : 41,910.04 = 17,621.06 : x
  2. Step 2: Convert to fraction form
    30,368.84/41,910.04 = 17,621.06/x
  3. Step 3: Cross multiply
    30,368.84x = 41,910.04 × 17,621.06
  4. Step 4: Simplify right side
    30,368.84x = 738,499,329.44
  5. Step 5: Solve for x
    x = 738,499,329.44/30,368.84
  6. Step 6: Final answer
    x = 24,317.67

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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.