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Finding the Fourth Proportional to 120,026.93, 180,153.35 and 60,905.03

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Solution

The fourth proportional to 120,026.93, 180,153.35 and 60,905.03 is: 91,414.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,026.93 : 180,153.35 = 60,905.03 : x
  2. Step 2: Convert to fraction form
    120,026.93/180,153.35 = 60,905.03/x
  3. Step 3: Cross multiply
    120,026.93x = 180,153.35 × 60,905.03
  4. Step 4: Simplify right side
    120,026.93x = 10,972,243,981.06
  5. Step 5: Solve for x
    x = 10,972,243,981.06/120,026.93
  6. Step 6: Final answer
    x = 91,414.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.