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Finding the Fourth Proportional to 355,086.40, 532,629.60 and 105,768.40

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Solution

The fourth proportional to 355,086.40, 532,629.60 and 105,768.40 is: 158,652.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,086.40 : 532,629.60 = 105,768.40 : x
  2. Step 2: Convert to fraction form
    355,086.40/532,629.60 = 105,768.40/x
  3. Step 3: Cross multiply
    355,086.40x = 532,629.60 × 105,768.40
  4. Step 4: Simplify right side
    355,086.40x = 56,335,380,584.64
  5. Step 5: Solve for x
    x = 56,335,380,584.64/355,086.40
  6. Step 6: Final answer
    x = 158,652.60

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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.