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Finding the Fourth Proportional to 57,891.92, 86,836.88 and 18,448.48

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Solution

The fourth proportional to 57,891.92, 86,836.88 and 18,448.48 is: 27,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,891.92 : 86,836.88 = 18,448.48 : x
  2. Step 2: Convert to fraction form
    57,891.92/86,836.88 = 18,448.48/x
  3. Step 3: Cross multiply
    57,891.92x = 86,836.88 × 18,448.48
  4. Step 4: Simplify right side
    57,891.92x = 1,602,008,443.94
  5. Step 5: Solve for x
    x = 1,602,008,443.94/57,891.92
  6. Step 6: Final answer
    x = 27,672.40

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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.