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Finding the Fourth Proportional to 354,693.60, 531,165.60 and 235,720.80

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Solution

The fourth proportional to 354,693.60, 531,165.60 and 235,720.80 is: 352,999.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,693.60 : 531,165.60 = 235,720.80 : x
  2. Step 2: Convert to fraction form
    354,693.60/531,165.60 = 235,720.80/x
  3. Step 3: Cross multiply
    354,693.60x = 531,165.60 × 235,720.80
  4. Step 4: Simplify right side
    354,693.60x = 125,206,780,164.48
  5. Step 5: Solve for x
    x = 125,206,780,164.48/354,693.60
  6. Step 6: Final answer
    x = 352,999.83

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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.