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Finding the Fourth Proportional to 121,506.02, 167,678.40 and 67,791.08

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Solution

The fourth proportional to 121,506.02, 167,678.40 and 67,791.08 is: 93,551.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,506.02 : 167,678.40 = 67,791.08 : x
  2. Step 2: Convert to fraction form
    121,506.02/167,678.40 = 67,791.08/x
  3. Step 3: Cross multiply
    121,506.02x = 167,678.40 × 67,791.08
  4. Step 4: Simplify right side
    121,506.02x = 11,367,099,558.89
  5. Step 5: Solve for x
    x = 11,367,099,558.89/121,506.02
  6. Step 6: Final answer
    x = 93,551.74

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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.