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Finding the Fourth Proportional to 228,633.44, 315,533.53 and 126,690.88

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Solution

The fourth proportional to 228,633.44, 315,533.53 and 126,690.88 is: 174,844.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,633.44 : 315,533.53 = 126,690.88 : x
  2. Step 2: Convert to fraction form
    228,633.44/315,533.53 = 126,690.88/x
  3. Step 3: Cross multiply
    228,633.44x = 315,533.53 × 126,690.88
  4. Step 4: Simplify right side
    228,633.44x = 39,975,219,833.73
  5. Step 5: Solve for x
    x = 39,975,219,833.73/228,633.44
  6. Step 6: Final answer
    x = 174,844.15

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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.