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Finding the Fourth Proportional to 57,980.80, 86,906.40 and 24,695.20

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Solution

The fourth proportional to 57,980.80, 86,906.40 and 24,695.20 is: 37,015.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,980.80 : 86,906.40 = 24,695.20 : x
  2. Step 2: Convert to fraction form
    57,980.80/86,906.40 = 24,695.20/x
  3. Step 3: Cross multiply
    57,980.80x = 86,906.40 × 24,695.20
  4. Step 4: Simplify right side
    57,980.80x = 2,146,170,929.28
  5. Step 5: Solve for x
    x = 2,146,170,929.28/57,980.80
  6. Step 6: Final answer
    x = 37,015.20

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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.