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Finding the Fourth Proportional to 57,970.66, 86,813.43 and 28,292.80

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Solution

The fourth proportional to 57,970.66, 86,813.43 and 28,292.80 is: 42,369.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,970.66 : 86,813.43 = 28,292.80 : x
  2. Step 2: Convert to fraction form
    57,970.66/86,813.43 = 28,292.80/x
  3. Step 3: Cross multiply
    57,970.66x = 86,813.43 × 28,292.80
  4. Step 4: Simplify right side
    57,970.66x = 2,456,195,012.30
  5. Step 5: Solve for x
    x = 2,456,195,012.30/57,970.66
  6. Step 6: Final answer
    x = 42,369.62

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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.