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Finding the Fourth Proportional to 121,849.34, 168,107.47 and 73,461.96

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Solution

The fourth proportional to 121,849.34, 168,107.47 and 73,461.96 is: 101,350.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,849.34 : 168,107.47 = 73,461.96 : x
  2. Step 2: Convert to fraction form
    121,849.34/168,107.47 = 73,461.96/x
  3. Step 3: Cross multiply
    121,849.34x = 168,107.47 × 73,461.96
  4. Step 4: Simplify right side
    121,849.34x = 12,349,504,053.19
  5. Step 5: Solve for x
    x = 12,349,504,053.19/121,849.34
  6. Step 6: Final answer
    x = 101,350.61

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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.