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Finding the Fourth Proportional to 393,670.17, 543,282.11 and 221,599.23

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Solution

The fourth proportional to 393,670.17, 543,282.11 and 221,599.23 is: 305,816.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,670.17 : 543,282.11 = 221,599.23 : x
  2. Step 2: Convert to fraction form
    393,670.17/543,282.11 = 221,599.23/x
  3. Step 3: Cross multiply
    393,670.17x = 543,282.11 × 221,599.23
  4. Step 4: Simplify right side
    393,670.17x = 120,390,900,255.58
  5. Step 5: Solve for x
    x = 120,390,900,255.58/393,670.17
  6. Step 6: Final answer
    x = 305,816.67

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.