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Finding the Fourth Proportional to 57,528.90, 86,194.80 and 45,719.10

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Solution

The fourth proportional to 57,528.90, 86,194.80 and 45,719.10 is: 68,500.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,528.90 : 86,194.80 = 45,719.10 : x
  2. Step 2: Convert to fraction form
    57,528.90/86,194.80 = 45,719.10/x
  3. Step 3: Cross multiply
    57,528.90x = 86,194.80 × 45,719.10
  4. Step 4: Simplify right side
    57,528.90x = 3,940,748,680.68
  5. Step 5: Solve for x
    x = 3,940,748,680.68/57,528.90
  6. Step 6: Final answer
    x = 68,500.33

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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.