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Finding the Fourth Proportional to 130,028.24, 194,958.24 and 85,520.24

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Solution

The fourth proportional to 130,028.24, 194,958.24 and 85,520.24 is: 128,225.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,028.24 : 194,958.24 = 85,520.24 : x
  2. Step 2: Convert to fraction form
    130,028.24/194,958.24 = 85,520.24/x
  3. Step 3: Cross multiply
    130,028.24x = 194,958.24 × 85,520.24
  4. Step 4: Simplify right side
    130,028.24x = 16,672,875,474.78
  5. Step 5: Solve for x
    x = 16,672,875,474.78/130,028.24
  6. Step 6: Final answer
    x = 128,225.03

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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.