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Finding the Fourth Proportional to 61,676.20, 85,113.46 and 34,819.80

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Solution

The fourth proportional to 61,676.20, 85,113.46 and 34,819.80 is: 48,051.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,676.20 : 85,113.46 = 34,819.80 : x
  2. Step 2: Convert to fraction form
    61,676.20/85,113.46 = 34,819.80/x
  3. Step 3: Cross multiply
    61,676.20x = 85,113.46 × 34,819.80
  4. Step 4: Simplify right side
    61,676.20x = 2,963,633,654.51
  5. Step 5: Solve for x
    x = 2,963,633,654.51/61,676.20
  6. Step 6: Final answer
    x = 48,051.50

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Why These Related Problems?

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