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Finding the Fourth Proportional to 121,647.53, 167,721.76 and 93,002.69

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Solution

The fourth proportional to 121,647.53, 167,721.76 and 93,002.69 is: 128,227.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,647.53 : 167,721.76 = 93,002.69 : x
  2. Step 2: Convert to fraction form
    121,647.53/167,721.76 = 93,002.69/x
  3. Step 3: Cross multiply
    121,647.53x = 167,721.76 × 93,002.69
  4. Step 4: Simplify right side
    121,647.53x = 15,598,574,851.53
  5. Step 5: Solve for x
    x = 15,598,574,851.53/121,647.53
  6. Step 6: Final answer
    x = 128,227.63

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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.