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Finding the Fourth Proportional to 56,687.40, 85,031.10 and 50,563.80

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Solution

The fourth proportional to 56,687.40, 85,031.10 and 50,563.80 is: 75,845.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,687.40 : 85,031.10 = 50,563.80 : x
  2. Step 2: Convert to fraction form
    56,687.40/85,031.10 = 50,563.80/x
  3. Step 3: Cross multiply
    56,687.40x = 85,031.10 × 50,563.80
  4. Step 4: Simplify right side
    56,687.40x = 4,299,495,534.18
  5. Step 5: Solve for x
    x = 4,299,495,534.18/56,687.40
  6. Step 6: Final answer
    x = 75,845.70

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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.