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Finding the Fourth Proportional to 38,453.76, 57,576.80 and 19,946.88

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Solution

The fourth proportional to 38,453.76, 57,576.80 and 19,946.88 is: 29,866.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,453.76 : 57,576.80 = 19,946.88 : x
  2. Step 2: Convert to fraction form
    38,453.76/57,576.80 = 19,946.88/x
  3. Step 3: Cross multiply
    38,453.76x = 57,576.80 × 19,946.88
  4. Step 4: Simplify right side
    38,453.76x = 1,148,477,520.38
  5. Step 5: Solve for x
    x = 1,148,477,520.38/38,453.76
  6. Step 6: Final answer
    x = 29,866.46

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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.