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Finding the Fourth Proportional to 230,336.64, 317,860.25 and 128,359.85

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Solution

The fourth proportional to 230,336.64, 317,860.25 and 128,359.85 is: 177,134.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,336.64 : 317,860.25 = 128,359.85 : x
  2. Step 2: Convert to fraction form
    230,336.64/317,860.25 = 128,359.85/x
  3. Step 3: Cross multiply
    230,336.64x = 317,860.25 × 128,359.85
  4. Step 4: Simplify right side
    230,336.64x = 40,800,494,163.81
  5. Step 5: Solve for x
    x = 40,800,494,163.81/230,336.64
  6. Step 6: Final answer
    x = 177,134.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.