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Finding the Fourth Proportional to 172,816.50, 238,486.77 and 93,328.50

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Solution

The fourth proportional to 172,816.50, 238,486.77 and 93,328.50 is: 128,793.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,816.50 : 238,486.77 = 93,328.50 : x
  2. Step 2: Convert to fraction form
    172,816.50/238,486.77 = 93,328.50/x
  3. Step 3: Cross multiply
    172,816.50x = 238,486.77 × 93,328.50
  4. Step 4: Simplify right side
    172,816.50x = 22,257,612,513.95
  5. Step 5: Solve for x
    x = 22,257,612,513.95/172,816.50
  6. Step 6: Final answer
    x = 128,793.33

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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.