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Finding the Fourth Proportional to 118,679.16, 178,018.29 and 48,558.45

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Solution

The fourth proportional to 118,679.16, 178,018.29 and 48,558.45 is: 72,837.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,679.16 : 178,018.29 = 48,558.45 : x
  2. Step 2: Convert to fraction form
    118,679.16/178,018.29 = 48,558.45/x
  3. Step 3: Cross multiply
    118,679.16x = 178,018.29 × 48,558.45
  4. Step 4: Simplify right side
    118,679.16x = 8,644,292,234.05
  5. Step 5: Solve for x
    x = 8,644,292,234.05/118,679.16
  6. Step 6: Final answer
    x = 72,837.49

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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.