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Finding the Fourth Proportional to 61,765.77, 92,664.10 and 28,509.09

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Solution

The fourth proportional to 61,765.77, 92,664.10 and 28,509.09 is: 42,770.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,765.77 : 92,664.10 = 28,509.09 : x
  2. Step 2: Convert to fraction form
    61,765.77/92,664.10 = 28,509.09/x
  3. Step 3: Cross multiply
    61,765.77x = 92,664.10 × 28,509.09
  4. Step 4: Simplify right side
    61,765.77x = 2,641,769,166.67
  5. Step 5: Solve for x
    x = 2,641,769,166.67/61,765.77
  6. Step 6: Final answer
    x = 42,770.76

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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.