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Finding the Fourth Proportional to 107,460.80, 161,191.20 and 74,283.20

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Solution

The fourth proportional to 107,460.80, 161,191.20 and 74,283.20 is: 111,424.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,460.80 : 161,191.20 = 74,283.20 : x
  2. Step 2: Convert to fraction form
    107,460.80/161,191.20 = 74,283.20/x
  3. Step 3: Cross multiply
    107,460.80x = 161,191.20 × 74,283.20
  4. Step 4: Simplify right side
    107,460.80x = 11,973,798,147.84
  5. Step 5: Solve for x
    x = 11,973,798,147.84/107,460.80
  6. Step 6: Final answer
    x = 111,424.80

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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.