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Finding the Fourth Proportional to 105,760.80, 158,698.80 and 43,437.60

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Solution

The fourth proportional to 105,760.80, 158,698.80 and 43,437.60 is: 65,180.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,760.80 : 158,698.80 = 43,437.60 : x
  2. Step 2: Convert to fraction form
    105,760.80/158,698.80 = 43,437.60/x
  3. Step 3: Cross multiply
    105,760.80x = 158,698.80 × 43,437.60
  4. Step 4: Simplify right side
    105,760.80x = 6,893,494,994.88
  5. Step 5: Solve for x
    x = 6,893,494,994.88/105,760.80
  6. Step 6: Final answer
    x = 65,180.06

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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.