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Finding the Fourth Proportional to 408,050.40, 612,074.67 and 108,531.06

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Solution

The fourth proportional to 408,050.40, 612,074.67 and 108,531.06 is: 162,796.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,050.40 : 612,074.67 = 108,531.06 : x
  2. Step 2: Convert to fraction form
    408,050.40/612,074.67 = 108,531.06/x
  3. Step 3: Cross multiply
    408,050.40x = 612,074.67 × 108,531.06
  4. Step 4: Simplify right side
    408,050.40x = 66,429,112,734.25
  5. Step 5: Solve for x
    x = 66,429,112,734.25/408,050.40
  6. Step 6: Final answer
    x = 162,796.34

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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.