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Finding the Fourth Proportional to 172,867, 238,556.46 and 93,379

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Solution

The fourth proportional to 172,867, 238,556.46 and 93,379 is: 128,863.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,867 : 238,556.46 = 93,379 : x
  2. Step 2: Convert to fraction form
    172,867/238,556.46 = 93,379/x
  3. Step 3: Cross multiply
    172,867x = 238,556.46 × 93,379
  4. Step 4: Simplify right side
    172,867x = 22,276,163,678.34
  5. Step 5: Solve for x
    x = 22,276,163,678.34/172,867
  6. Step 6: Final answer
    x = 128,863.02

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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.