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Finding the Fourth Proportional to 61,676.60, 92,453.20 and 28,420.68

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Solution

The fourth proportional to 61,676.60, 92,453.20 and 28,420.68 is: 42,602.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,676.60 : 92,453.20 = 28,420.68 : x
  2. Step 2: Convert to fraction form
    61,676.60/92,453.20 = 28,420.68/x
  3. Step 3: Cross multiply
    61,676.60x = 92,453.20 × 28,420.68
  4. Step 4: Simplify right side
    61,676.60x = 2,627,582,812.18
  5. Step 5: Solve for x
    x = 2,627,582,812.18/61,676.60
  6. Step 6: Final answer
    x = 42,602.59

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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.