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Finding the Fourth Proportional to 19,393.68, 29,090.50 and 5,542.68

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Solution

The fourth proportional to 19,393.68, 29,090.50 and 5,542.68 is: 8,314.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,393.68 : 29,090.50 = 5,542.68 : x
  2. Step 2: Convert to fraction form
    19,393.68/29,090.50 = 5,542.68/x
  3. Step 3: Cross multiply
    19,393.68x = 29,090.50 × 5,542.68
  4. Step 4: Simplify right side
    19,393.68x = 161,239,332.54
  5. Step 5: Solve for x
    x = 161,239,332.54/19,393.68
  6. Step 6: Final answer
    x = 8,314.01

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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.