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Finding the Fourth Proportional to 38,892.40, 58,309.80 and 16,687.60

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Solution

The fourth proportional to 38,892.40, 58,309.80 and 16,687.60 is: 25,019.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,892.40 : 58,309.80 = 16,687.60 : x
  2. Step 2: Convert to fraction form
    38,892.40/58,309.80 = 16,687.60/x
  3. Step 3: Cross multiply
    38,892.40x = 58,309.80 × 16,687.60
  4. Step 4: Simplify right side
    38,892.40x = 973,050,618.48
  5. Step 5: Solve for x
    x = 973,050,618.48/38,892.40
  6. Step 6: Final answer
    x = 25,019.04

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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.