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Finding the Fourth Proportional to 192,316.80, 288,388.80 and 73,948.80

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Solution

The fourth proportional to 192,316.80, 288,388.80 and 73,948.80 is: 110,889.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,316.80 : 288,388.80 = 73,948.80 : x
  2. Step 2: Convert to fraction form
    192,316.80/288,388.80 = 73,948.80/x
  3. Step 3: Cross multiply
    192,316.80x = 288,388.80 × 73,948.80
  4. Step 4: Simplify right side
    192,316.80x = 21,326,005,693.44
  5. Step 5: Solve for x
    x = 21,326,005,693.44/192,316.80
  6. Step 6: Final answer
    x = 110,889.98

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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.