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Finding the Fourth Proportional to 57,716.40, 86,574.60 and 56,744.40

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Solution

The fourth proportional to 57,716.40, 86,574.60 and 56,744.40 is: 85,116.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,716.40 : 86,574.60 = 56,744.40 : x
  2. Step 2: Convert to fraction form
    57,716.40/86,574.60 = 56,744.40/x
  3. Step 3: Cross multiply
    57,716.40x = 86,574.60 × 56,744.40
  4. Step 4: Simplify right side
    57,716.40x = 4,912,623,732.24
  5. Step 5: Solve for x
    x = 4,912,623,732.24/57,716.40
  6. Step 6: Final answer
    x = 85,116.60

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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.