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Finding the Fourth Proportional to 56,935.40, 85,403.10 and 36,250.60

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Solution

The fourth proportional to 56,935.40, 85,403.10 and 36,250.60 is: 54,375.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,935.40 : 85,403.10 = 36,250.60 : x
  2. Step 2: Convert to fraction form
    56,935.40/85,403.10 = 36,250.60/x
  3. Step 3: Cross multiply
    56,935.40x = 85,403.10 × 36,250.60
  4. Step 4: Simplify right side
    56,935.40x = 3,095,913,616.86
  5. Step 5: Solve for x
    x = 3,095,913,616.86/56,935.40
  6. Step 6: Final answer
    x = 54,375.90

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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.