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Finding the Fourth Proportional to 121,676.65, 167,911.99 and 67,962.45

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Solution

The fourth proportional to 121,676.65, 167,911.99 and 67,962.45 is: 93,787.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,676.65 : 167,911.99 = 67,962.45 : x
  2. Step 2: Convert to fraction form
    121,676.65/167,911.99 = 67,962.45/x
  3. Step 3: Cross multiply
    121,676.65x = 167,911.99 × 67,962.45
  4. Step 4: Simplify right side
    121,676.65x = 11,411,710,224.78
  5. Step 5: Solve for x
    x = 11,411,710,224.78/121,676.65
  6. Step 6: Final answer
    x = 93,787.18

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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.