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Finding the Fourth Proportional to 129,794.52, 194,622.12 and 66,588.60

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Solution

The fourth proportional to 129,794.52, 194,622.12 and 66,588.60 is: 99,847.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,794.52 : 194,622.12 = 66,588.60 : x
  2. Step 2: Convert to fraction form
    129,794.52/194,622.12 = 66,588.60/x
  3. Step 3: Cross multiply
    129,794.52x = 194,622.12 × 66,588.60
  4. Step 4: Simplify right side
    129,794.52x = 12,959,614,499.83
  5. Step 5: Solve for x
    x = 12,959,614,499.83/129,794.52
  6. Step 6: Final answer
    x = 99,847.16

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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.