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Finding the Fourth Proportional to 171,666.78, 257,571.03 and 92,688

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Solution

The fourth proportional to 171,666.78, 257,571.03 and 92,688 is: 139,070.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,666.78 : 257,571.03 = 92,688 : x
  2. Step 2: Convert to fraction form
    171,666.78/257,571.03 = 92,688/x
  3. Step 3: Cross multiply
    171,666.78x = 257,571.03 × 92,688
  4. Step 4: Simplify right side
    171,666.78x = 23,873,743,628.64
  5. Step 5: Solve for x
    x = 23,873,743,628.64/171,666.78
  6. Step 6: Final answer
    x = 139,070.26

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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.