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Finding the Fourth Proportional to 57,999.60, 86,999.40 and 18,560.70

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Solution

The fourth proportional to 57,999.60, 86,999.40 and 18,560.70 is: 27,841.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,999.60 : 86,999.40 = 18,560.70 : x
  2. Step 2: Convert to fraction form
    57,999.60/86,999.40 = 18,560.70/x
  3. Step 3: Cross multiply
    57,999.60x = 86,999.40 × 18,560.70
  4. Step 4: Simplify right side
    57,999.60x = 1,614,769,763.58
  5. Step 5: Solve for x
    x = 1,614,769,763.58/57,999.60
  6. Step 6: Final answer
    x = 27,841.05

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1.5x scale

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.