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Finding the Fourth Proportional to 257,851.68, 355,851 and 171,661.92

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Solution

The fourth proportional to 257,851.68, 355,851 and 171,661.92 is: 236,903.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,851.68 : 355,851 = 171,661.92 : x
  2. Step 2: Convert to fraction form
    257,851.68/355,851 = 171,661.92/x
  3. Step 3: Cross multiply
    257,851.68x = 355,851 × 171,661.92
  4. Step 4: Simplify right side
    257,851.68x = 61,086,065,893.92
  5. Step 5: Solve for x
    x = 61,086,065,893.92/257,851.68
  6. Step 6: Final answer
    x = 236,903.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.