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Finding the Fourth Proportional to 112,284.17, 154,978.20 and 74,050.62

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Solution

The fourth proportional to 112,284.17, 154,978.20 and 74,050.62 is: 102,207.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,284.17 : 154,978.20 = 74,050.62 : x
  2. Step 2: Convert to fraction form
    112,284.17/154,978.20 = 74,050.62/x
  3. Step 3: Cross multiply
    112,284.17x = 154,978.20 × 74,050.62
  4. Step 4: Simplify right side
    112,284.17x = 11,476,231,796.48
  5. Step 5: Solve for x
    x = 11,476,231,796.48/112,284.17
  6. Step 6: Final answer
    x = 102,207.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.