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Finding the Fourth Proportional to 257,636.83, 386,268.41 and 173,187.54

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Solution

The fourth proportional to 257,636.83, 386,268.41 and 173,187.54 is: 259,655.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,636.83 : 386,268.41 = 173,187.54 : x
  2. Step 2: Convert to fraction form
    257,636.83/386,268.41 = 173,187.54/x
  3. Step 3: Cross multiply
    257,636.83x = 386,268.41 × 173,187.54
  4. Step 4: Simplify right side
    257,636.83x = 66,896,875,707.61
  5. Step 5: Solve for x
    x = 66,896,875,707.61/257,636.83
  6. Step 6: Final answer
    x = 259,655.72

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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.