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Finding the Fourth Proportional to 107,802.80, 161,704.20 and 92,769.20

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Solution

The fourth proportional to 107,802.80, 161,704.20 and 92,769.20 is: 139,153.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,802.80 : 161,704.20 = 92,769.20 : x
  2. Step 2: Convert to fraction form
    107,802.80/161,704.20 = 92,769.20/x
  3. Step 3: Cross multiply
    107,802.80x = 161,704.20 × 92,769.20
  4. Step 4: Simplify right side
    107,802.80x = 15,001,169,270.64
  5. Step 5: Solve for x
    x = 15,001,169,270.64/107,802.80
  6. Step 6: Final answer
    x = 139,153.80

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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.