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Finding the Fourth Proportional to 229,605.33, 316,859.14 and 126,243.90

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Solution

The fourth proportional to 229,605.33, 316,859.14 and 126,243.90 is: 174,218.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,605.33 : 316,859.14 = 126,243.90 : x
  2. Step 2: Convert to fraction form
    229,605.33/316,859.14 = 126,243.90/x
  3. Step 3: Cross multiply
    229,605.33x = 316,859.14 × 126,243.90
  4. Step 4: Simplify right side
    229,605.33x = 40,001,533,584.25
  5. Step 5: Solve for x
    x = 40,001,533,584.25/229,605.33
  6. Step 6: Final answer
    x = 174,218.66

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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.