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Finding the Fourth Proportional to 265,928.80, 399,087.60 and 177,152.80

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Solution

The fourth proportional to 265,928.80, 399,087.60 and 177,152.80 is: 265,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,928.80 : 399,087.60 = 177,152.80 : x
  2. Step 2: Convert to fraction form
    265,928.80/399,087.60 = 177,152.80/x
  3. Step 3: Cross multiply
    265,928.80x = 399,087.60 × 177,152.80
  4. Step 4: Simplify right side
    265,928.80x = 70,699,485,785.28
  5. Step 5: Solve for x
    x = 70,699,485,785.28/265,928.80
  6. Step 6: Final answer
    x = 265,858.70

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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.