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Finding the Fourth Proportional to 47,216.92, 70,808.87 and 13,928.14

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Solution

The fourth proportional to 47,216.92, 70,808.87 and 13,928.14 is: 20,887.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,216.92 : 70,808.87 = 13,928.14 : x
  2. Step 2: Convert to fraction form
    47,216.92/70,808.87 = 13,928.14/x
  3. Step 3: Cross multiply
    47,216.92x = 70,808.87 × 13,928.14
  4. Step 4: Simplify right side
    47,216.92x = 986,235,784.96
  5. Step 5: Solve for x
    x = 986,235,784.96/47,216.92
  6. Step 6: Final answer
    x = 20,887.34

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1.5x scale

Why These Related Problems?

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