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Finding the Fourth Proportional to 316,999.86, 437,457.83 and 173,765.94

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Solution

The fourth proportional to 316,999.86, 437,457.83 and 173,765.94 is: 239,795.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,999.86 : 437,457.83 = 173,765.94 : x
  2. Step 2: Convert to fraction form
    316,999.86/437,457.83 = 173,765.94/x
  3. Step 3: Cross multiply
    316,999.86x = 437,457.83 × 173,765.94
  4. Step 4: Simplify right side
    316,999.86x = 76,015,270,171.48
  5. Step 5: Solve for x
    x = 76,015,270,171.48/316,999.86
  6. Step 6: Final answer
    x = 239,795.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.