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Finding the Fourth Proportional to 19,562.80, 29,349.60 and 8,474.80

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Solution

The fourth proportional to 19,562.80, 29,349.60 and 8,474.80 is: 12,714.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,562.80 : 29,349.60 = 8,474.80 : x
  2. Step 2: Convert to fraction form
    19,562.80/29,349.60 = 8,474.80/x
  3. Step 3: Cross multiply
    19,562.80x = 29,349.60 × 8,474.80
  4. Step 4: Simplify right side
    19,562.80x = 248,731,990.08
  5. Step 5: Solve for x
    x = 248,731,990.08/19,562.80
  6. Step 6: Final answer
    x = 12,714.54

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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.