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Finding the Fourth Proportional to 56,909.20, 85,363.80 and 53,847.40

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Solution

The fourth proportional to 56,909.20, 85,363.80 and 53,847.40 is: 80,771.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,909.20 : 85,363.80 = 53,847.40 : x
  2. Step 2: Convert to fraction form
    56,909.20/85,363.80 = 53,847.40/x
  3. Step 3: Cross multiply
    56,909.20x = 85,363.80 × 53,847.40
  4. Step 4: Simplify right side
    56,909.20x = 4,596,618,684.12
  5. Step 5: Solve for x
    x = 4,596,618,684.12/56,909.20
  6. Step 6: Final answer
    x = 80,771.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.