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Finding the Fourth Proportional to 207,234.36, 310,775.40 and 74,078.52

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Solution

The fourth proportional to 207,234.36, 310,775.40 and 74,078.52 is: 111,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,234.36 : 310,775.40 = 74,078.52 : x
  2. Step 2: Convert to fraction form
    207,234.36/310,775.40 = 74,078.52/x
  3. Step 3: Cross multiply
    207,234.36x = 310,775.40 × 74,078.52
  4. Step 4: Simplify right side
    207,234.36x = 23,021,781,684.41
  5. Step 5: Solve for x
    x = 23,021,781,684.41/207,234.36
  6. Step 6: Final answer
    x = 111,090.56

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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.