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Finding the Fourth Proportional to 107,467.30, 161,200.95 and 74,289.70

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Solution

The fourth proportional to 107,467.30, 161,200.95 and 74,289.70 is: 111,434.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,467.30 : 161,200.95 = 74,289.70 : x
  2. Step 2: Convert to fraction form
    107,467.30/161,200.95 = 74,289.70/x
  3. Step 3: Cross multiply
    107,467.30x = 161,200.95 × 74,289.70
  4. Step 4: Simplify right side
    107,467.30x = 11,975,570,215.22
  5. Step 5: Solve for x
    x = 11,975,570,215.22/107,467.30
  6. Step 6: Final answer
    x = 111,434.55

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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.