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Finding the Fourth Proportional to 443,639, 612,177.94 and 271,605.46

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Solution

The fourth proportional to 443,639, 612,177.94 and 271,605.46 is: 374,788.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,639 : 612,177.94 = 271,605.46 : x
  2. Step 2: Convert to fraction form
    443,639/612,177.94 = 271,605.46/x
  3. Step 3: Cross multiply
    443,639x = 612,177.94 × 271,605.46
  4. Step 4: Simplify right side
    443,639x = 166,270,870,995.55
  5. Step 5: Solve for x
    x = 166,270,870,995.55/443,639
  6. Step 6: Final answer
    x = 374,788.67

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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.