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Finding the Fourth Proportional to 47,278.34, 70,914.27 and 12,216.68

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Solution

The fourth proportional to 47,278.34, 70,914.27 and 12,216.68 is: 18,324.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,278.34 : 70,914.27 = 12,216.68 : x
  2. Step 2: Convert to fraction form
    47,278.34/70,914.27 = 12,216.68/x
  3. Step 3: Cross multiply
    47,278.34x = 70,914.27 × 12,216.68
  4. Step 4: Simplify right side
    47,278.34x = 866,336,944.02
  5. Step 5: Solve for x
    x = 866,336,944.02/47,278.34
  6. Step 6: Final answer
    x = 18,324.18

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.