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Finding the Fourth Proportional to 129,760.99, 194,471.92 and 66,527.53

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Solution

The fourth proportional to 129,760.99, 194,471.92 and 66,527.53 is: 99,704.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,760.99 : 194,471.92 = 66,527.53 : x
  2. Step 2: Convert to fraction form
    129,760.99/194,471.92 = 66,527.53/x
  3. Step 3: Cross multiply
    129,760.99x = 194,471.92 × 66,527.53
  4. Step 4: Simplify right side
    129,760.99x = 12,937,736,491.96
  5. Step 5: Solve for x
    x = 12,937,736,491.96/129,760.99
  6. Step 6: Final answer
    x = 99,704.36

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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.