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Finding the Fourth Proportional to 55,892.60, 83,821.08 and 18,445.72

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Solution

The fourth proportional to 55,892.60, 83,821.08 and 18,445.72 is: 27,662.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,892.60 : 83,821.08 = 18,445.72 : x
  2. Step 2: Convert to fraction form
    55,892.60/83,821.08 = 18,445.72/x
  3. Step 3: Cross multiply
    55,892.60x = 83,821.08 × 18,445.72
  4. Step 4: Simplify right side
    55,892.60x = 1,546,140,171.78
  5. Step 5: Solve for x
    x = 1,546,140,171.78/55,892.60
  6. Step 6: Final answer
    x = 27,662.70

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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.