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Finding the Fourth Proportional to 57,978.80, 86,903.40 and 24,693.20

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Solution

The fourth proportional to 57,978.80, 86,903.40 and 24,693.20 is: 37,012.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,978.80 : 86,903.40 = 24,693.20 : x
  2. Step 2: Convert to fraction form
    57,978.80/86,903.40 = 24,693.20/x
  3. Step 3: Cross multiply
    57,978.80x = 86,903.40 × 24,693.20
  4. Step 4: Simplify right side
    57,978.80x = 2,145,923,036.88
  5. Step 5: Solve for x
    x = 2,145,923,036.88/57,978.80
  6. Step 6: Final answer
    x = 37,012.20

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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.