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Finding the Fourth Proportional to 216,901.61, 299,324.17 and 121,408.33

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Solution

The fourth proportional to 216,901.61, 299,324.17 and 121,408.33 is: 167,543.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,901.61 : 299,324.17 = 121,408.33 : x
  2. Step 2: Convert to fraction form
    216,901.61/299,324.17 = 121,408.33/x
  3. Step 3: Cross multiply
    216,901.61x = 299,324.17 × 121,408.33
  4. Step 4: Simplify right side
    216,901.61x = 36,340,447,608.34
  5. Step 5: Solve for x
    x = 36,340,447,608.34/216,901.61
  6. Step 6: Final answer
    x = 167,543.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.