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Finding the Fourth Proportional to 57,581.40, 86,501.70 and 56,026.20

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Solution

The fourth proportional to 57,581.40, 86,501.70 and 56,026.20 is: 84,165.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,581.40 : 86,501.70 = 56,026.20 : x
  2. Step 2: Convert to fraction form
    57,581.40/86,501.70 = 56,026.20/x
  3. Step 3: Cross multiply
    57,581.40x = 86,501.70 × 56,026.20
  4. Step 4: Simplify right side
    57,581.40x = 4,846,361,544.54
  5. Step 5: Solve for x
    x = 4,846,361,544.54/57,581.40
  6. Step 6: Final answer
    x = 84,165.40

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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.