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Finding the Fourth Proportional to 171,378.74, 257,078.98 and 53,040.14

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Solution

The fourth proportional to 171,378.74, 257,078.98 and 53,040.14 is: 79,563.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,378.74 : 257,078.98 = 53,040.14 : x
  2. Step 2: Convert to fraction form
    171,378.74/257,078.98 = 53,040.14/x
  3. Step 3: Cross multiply
    171,378.74x = 257,078.98 × 53,040.14
  4. Step 4: Simplify right side
    171,378.74x = 13,635,505,090.26
  5. Step 5: Solve for x
    x = 13,635,505,090.26/171,378.74
  6. Step 6: Final answer
    x = 79,563.57

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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.