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Finding the Fourth Proportional to 121,210.45, 167,293.79 and 73,489.93

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Solution

The fourth proportional to 121,210.45, 167,293.79 and 73,489.93 is: 101,430.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,210.45 : 167,293.79 = 73,489.93 : x
  2. Step 2: Convert to fraction form
    121,210.45/167,293.79 = 73,489.93/x
  3. Step 3: Cross multiply
    121,210.45x = 167,293.79 × 73,489.93
  4. Step 4: Simplify right side
    121,210.45x = 12,294,408,916.53
  5. Step 5: Solve for x
    x = 12,294,408,916.53/121,210.45
  6. Step 6: Final answer
    x = 101,430.27

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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.