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Finding the Fourth Proportional to 121,532.69, 167,714.73 and 67,817.13

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Solution

The fourth proportional to 121,532.69, 167,714.73 and 67,817.13 is: 93,587.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,532.69 : 167,714.73 = 67,817.13 : x
  2. Step 2: Convert to fraction form
    121,532.69/167,714.73 = 67,817.13/x
  3. Step 3: Cross multiply
    121,532.69x = 167,714.73 × 67,817.13
  4. Step 4: Simplify right side
    121,532.69x = 11,373,931,647.32
  5. Step 5: Solve for x
    x = 11,373,931,647.32/121,532.69
  6. Step 6: Final answer
    x = 93,587.43

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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.