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Finding the Fourth Proportional to 321,186.75, 443,225.95 and 185,226.42

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Solution

The fourth proportional to 321,186.75, 443,225.95 and 185,226.42 is: 255,605.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,186.75 : 443,225.95 = 185,226.42 : x
  2. Step 2: Convert to fraction form
    321,186.75/443,225.95 = 185,226.42/x
  3. Step 3: Cross multiply
    321,186.75x = 443,225.95 × 185,226.42
  4. Step 4: Simplify right side
    321,186.75x = 82,097,155,969.60
  5. Step 5: Solve for x
    x = 82,097,155,969.60/321,186.75
  6. Step 6: Final answer
    x = 255,605.67

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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.