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Finding the Fourth Proportional to 56,866.80, 85,300.20 and 43,744.80

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Solution

The fourth proportional to 56,866.80, 85,300.20 and 43,744.80 is: 65,617.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,866.80 : 85,300.20 = 43,744.80 : x
  2. Step 2: Convert to fraction form
    56,866.80/85,300.20 = 43,744.80/x
  3. Step 3: Cross multiply
    56,866.80x = 85,300.20 × 43,744.80
  4. Step 4: Simplify right side
    56,866.80x = 3,731,440,188.96
  5. Step 5: Solve for x
    x = 3,731,440,188.96/56,866.80
  6. Step 6: Final answer
    x = 65,617.20

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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.