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Finding the Fourth Proportional to 74,381.92, 111,556.48 and 21,795.52

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Solution

The fourth proportional to 74,381.92, 111,556.48 and 21,795.52 is: 32,688.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,381.92 : 111,556.48 = 21,795.52 : x
  2. Step 2: Convert to fraction form
    74,381.92/111,556.48 = 21,795.52/x
  3. Step 3: Cross multiply
    74,381.92x = 111,556.48 × 21,795.52
  4. Step 4: Simplify right side
    74,381.92x = 2,431,431,490.97
  5. Step 5: Solve for x
    x = 2,431,431,490.97/74,381.92
  6. Step 6: Final answer
    x = 32,688.47

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1.5x scale

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.