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Finding the Fourth Proportional to 107,632.80, 161,449.20 and 73,807.20

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Solution

The fourth proportional to 107,632.80, 161,449.20 and 73,807.20 is: 110,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,632.80 : 161,449.20 = 73,807.20 : x
  2. Step 2: Convert to fraction form
    107,632.80/161,449.20 = 73,807.20/x
  3. Step 3: Cross multiply
    107,632.80x = 161,449.20 × 73,807.20
  4. Step 4: Simplify right side
    107,632.80x = 11,916,113,394.24
  5. Step 5: Solve for x
    x = 11,916,113,394.24/107,632.80
  6. Step 6: Final answer
    x = 110,710.80

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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.