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Finding the Fourth Proportional to 242,490.89, 363,736.33 and 74,012.09

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Solution

The fourth proportional to 242,490.89, 363,736.33 and 74,012.09 is: 111,018.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,490.89 : 363,736.33 = 74,012.09 : x
  2. Step 2: Convert to fraction form
    242,490.89/363,736.33 = 74,012.09/x
  3. Step 3: Cross multiply
    242,490.89x = 363,736.33 × 74,012.09
  4. Step 4: Simplify right side
    242,490.89x = 26,920,883,988.52
  5. Step 5: Solve for x
    x = 26,920,883,988.52/242,490.89
  6. Step 6: Final answer
    x = 111,018.12

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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.