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Finding the Fourth Proportional to 19,393.88, 29,090.80 and 5,542.88

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Solution

The fourth proportional to 19,393.88, 29,090.80 and 5,542.88 is: 8,314.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,393.88 : 29,090.80 = 5,542.88 : x
  2. Step 2: Convert to fraction form
    19,393.88/29,090.80 = 5,542.88/x
  3. Step 3: Cross multiply
    19,393.88x = 29,090.80 × 5,542.88
  4. Step 4: Simplify right side
    19,393.88x = 161,246,813.50
  5. Step 5: Solve for x
    x = 161,246,813.50/19,393.88
  6. Step 6: Final answer
    x = 8,314.31

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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.