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Finding the Fourth Proportional to 619,388.50, 929,080.96 and 170,109.78

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Solution

The fourth proportional to 619,388.50, 929,080.96 and 170,109.78 is: 255,164.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,388.50 : 929,080.96 = 170,109.78 : x
  2. Step 2: Convert to fraction form
    619,388.50/929,080.96 = 170,109.78/x
  3. Step 3: Cross multiply
    619,388.50x = 929,080.96 × 170,109.78
  4. Step 4: Simplify right side
    619,388.50x = 158,045,757,707.79
  5. Step 5: Solve for x
    x = 158,045,757,707.79/619,388.50
  6. Step 6: Final answer
    x = 255,164.18

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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.