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Finding the Fourth Proportional to 49,245.80, 73,878.30 and 19,658.60

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Solution

The fourth proportional to 49,245.80, 73,878.30 and 19,658.60 is: 29,491.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,245.80 : 73,878.30 = 19,658.60 : x
  2. Step 2: Convert to fraction form
    49,245.80/73,878.30 = 19,658.60/x
  3. Step 3: Cross multiply
    49,245.80x = 73,878.30 × 19,658.60
  4. Step 4: Simplify right side
    49,245.80x = 1,452,343,948.38
  5. Step 5: Solve for x
    x = 1,452,343,948.38/49,245.80
  6. Step 6: Final answer
    x = 29,491.73

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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.