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Finding the Fourth Proportional to 207,730.80, 311,693.40 and 108,003.60

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Solution

The fourth proportional to 207,730.80, 311,693.40 and 108,003.60 is: 162,055.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,730.80 : 311,693.40 = 108,003.60 : x
  2. Step 2: Convert to fraction form
    207,730.80/311,693.40 = 108,003.60/x
  3. Step 3: Cross multiply
    207,730.80x = 311,693.40 × 108,003.60
  4. Step 4: Simplify right side
    207,730.80x = 33,664,009,296.24
  5. Step 5: Solve for x
    x = 33,664,009,296.24/207,730.80
  6. Step 6: Final answer
    x = 162,055.94

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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.