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Finding the Fourth Proportional to 111,063.96, 166,689.09 and 57,788.64

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Solution

The fourth proportional to 111,063.96, 166,689.09 and 57,788.64 is: 86,731.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,063.96 : 166,689.09 = 57,788.64 : x
  2. Step 2: Convert to fraction form
    111,063.96/166,689.09 = 57,788.64/x
  3. Step 3: Cross multiply
    111,063.96x = 166,689.09 × 57,788.64
  4. Step 4: Simplify right side
    111,063.96x = 9,632,735,813.94
  5. Step 5: Solve for x
    x = 9,632,735,813.94/111,063.96
  6. Step 6: Final answer
    x = 86,731.43

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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.