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Finding the Fourth Proportional to 194,693.56, 292,040.34 and 76,420.60

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Solution

The fourth proportional to 194,693.56, 292,040.34 and 76,420.60 is: 114,630.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,693.56 : 292,040.34 = 76,420.60 : x
  2. Step 2: Convert to fraction form
    194,693.56/292,040.34 = 76,420.60/x
  3. Step 3: Cross multiply
    194,693.56x = 292,040.34 × 76,420.60
  4. Step 4: Simplify right side
    194,693.56x = 22,317,898,007.00
  5. Step 5: Solve for x
    x = 22,317,898,007.00/194,693.56
  6. Step 6: Final answer
    x = 114,630.90

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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.