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Finding the Fourth Proportional to 61,786.71, 92,608.47 and 28,436.76

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Solution

The fourth proportional to 61,786.71, 92,608.47 and 28,436.76 is: 42,622.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,786.71 : 92,608.47 = 28,436.76 : x
  2. Step 2: Convert to fraction form
    61,786.71/92,608.47 = 28,436.76/x
  3. Step 3: Cross multiply
    61,786.71x = 92,608.47 × 28,436.76
  4. Step 4: Simplify right side
    61,786.71x = 2,633,484,835.36
  5. Step 5: Solve for x
    x = 2,633,484,835.36/61,786.71
  6. Step 6: Final answer
    x = 42,622.19

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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.