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Finding the Fourth Proportional to 121,693.47, 167,924.94 and 67,977.33

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Solution

The fourth proportional to 121,693.47, 167,924.94 and 67,977.33 is: 93,801.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,693.47 : 167,924.94 = 67,977.33 : x
  2. Step 2: Convert to fraction form
    121,693.47/167,924.94 = 67,977.33/x
  3. Step 3: Cross multiply
    121,693.47x = 167,924.94 × 67,977.33
  4. Step 4: Simplify right side
    121,693.47x = 11,415,089,061.61
  5. Step 5: Solve for x
    x = 11,415,089,061.61/121,693.47
  6. Step 6: Final answer
    x = 93,801.99

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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.