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Finding the Fourth Proportional to 118,676.43, 178,015.35 and 48,555.74

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Solution

The fourth proportional to 118,676.43, 178,015.35 and 48,555.74 is: 72,833.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,676.43 : 178,015.35 = 48,555.74 : x
  2. Step 2: Convert to fraction form
    118,676.43/178,015.35 = 48,555.74/x
  3. Step 3: Cross multiply
    118,676.43x = 178,015.35 × 48,555.74
  4. Step 4: Simplify right side
    118,676.43x = 8,643,666,160.53
  5. Step 5: Solve for x
    x = 8,643,666,160.53/118,676.43
  6. Step 6: Final answer
    x = 72,833.89

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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.