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Finding the Fourth Proportional to 57,632.60, 86,451.60 and 28,015.12

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Solution

The fourth proportional to 57,632.60, 86,451.60 and 28,015.12 is: 42,023.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,632.60 : 86,451.60 = 28,015.12 : x
  2. Step 2: Convert to fraction form
    57,632.60/86,451.60 = 28,015.12/x
  3. Step 3: Cross multiply
    57,632.60x = 86,451.60 × 28,015.12
  4. Step 4: Simplify right side
    57,632.60x = 2,421,951,948.19
  5. Step 5: Solve for x
    x = 2,421,951,948.19/57,632.60
  6. Step 6: Final answer
    x = 42,023.99

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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.