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Finding the Fourth Proportional to 56,946.80, 85,420.20 and 44,505.20

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Solution

The fourth proportional to 56,946.80, 85,420.20 and 44,505.20 is: 66,757.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,946.80 : 85,420.20 = 44,505.20 : x
  2. Step 2: Convert to fraction form
    56,946.80/85,420.20 = 44,505.20/x
  3. Step 3: Cross multiply
    56,946.80x = 85,420.20 × 44,505.20
  4. Step 4: Simplify right side
    56,946.80x = 3,801,643,085.04
  5. Step 5: Solve for x
    x = 3,801,643,085.04/56,946.80
  6. Step 6: Final answer
    x = 66,757.80

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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.