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Finding the Fourth Proportional to 194,889.20, 292,410.60 and 76,540.40

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Solution

The fourth proportional to 194,889.20, 292,410.60 and 76,540.40 is: 114,840.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,889.20 : 292,410.60 = 76,540.40 : x
  2. Step 2: Convert to fraction form
    194,889.20/292,410.60 = 76,540.40/x
  3. Step 3: Cross multiply
    194,889.20x = 292,410.60 × 76,540.40
  4. Step 4: Simplify right side
    194,889.20x = 22,381,224,288.24
  5. Step 5: Solve for x
    x = 22,381,224,288.24/194,889.20
  6. Step 6: Final answer
    x = 114,840.76

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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.