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Finding the Fourth Proportional to 57,742.20, 86,678.10 and 44,652.60

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Solution

The fourth proportional to 57,742.20, 86,678.10 and 44,652.60 is: 67,029.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,742.20 : 86,678.10 = 44,652.60 : x
  2. Step 2: Convert to fraction form
    57,742.20/86,678.10 = 44,652.60/x
  3. Step 3: Cross multiply
    57,742.20x = 86,678.10 × 44,652.60
  4. Step 4: Simplify right side
    57,742.20x = 3,870,402,528.06
  5. Step 5: Solve for x
    x = 3,870,402,528.06/57,742.20
  6. Step 6: Final answer
    x = 67,029.01

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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.