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Finding the Fourth Proportional to 170,600.72, 255,376.16 and 111,308.72

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Solution

The fourth proportional to 170,600.72, 255,376.16 and 111,308.72 is: 166,620.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,600.72 : 255,376.16 = 111,308.72 : x
  2. Step 2: Convert to fraction form
    170,600.72/255,376.16 = 111,308.72/x
  3. Step 3: Cross multiply
    170,600.72x = 255,376.16 × 111,308.72
  4. Step 4: Simplify right side
    170,600.72x = 28,425,593,488.12
  5. Step 5: Solve for x
    x = 28,425,593,488.12/170,600.72
  6. Step 6: Final answer
    x = 166,620.60

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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.