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Finding the Fourth Proportional to 171,374.69, 257,114.59 and 76,684.59

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Solution

The fourth proportional to 171,374.69, 257,114.59 and 76,684.59 is: 115,050.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,374.69 : 257,114.59 = 76,684.59 : x
  2. Step 2: Convert to fraction form
    171,374.69/257,114.59 = 76,684.59/x
  3. Step 3: Cross multiply
    171,374.69x = 257,114.59 × 76,684.59
  4. Step 4: Simplify right side
    171,374.69x = 19,716,726,917.17
  5. Step 5: Solve for x
    x = 19,716,726,917.17/171,374.69
  6. Step 6: Final answer
    x = 115,050.40

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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.