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Finding the Fourth Proportional to 192,889.54, 289,348.20 and 66,528

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Solution

The fourth proportional to 192,889.54, 289,348.20 and 66,528 is: 99,796.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,889.54 : 289,348.20 = 66,528 : x
  2. Step 2: Convert to fraction form
    192,889.54/289,348.20 = 66,528/x
  3. Step 3: Cross multiply
    192,889.54x = 289,348.20 × 66,528
  4. Step 4: Simplify right side
    192,889.54x = 19,249,757,049.60
  5. Step 5: Solve for x
    x = 19,249,757,049.60/192,889.54
  6. Step 6: Final answer
    x = 99,796.79

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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.