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Finding the Fourth Proportional to 56,943.60, 85,213.80 and 49,628.40

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Solution

The fourth proportional to 56,943.60, 85,213.80 and 49,628.40 is: 74,266.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,943.60 : 85,213.80 = 49,628.40 : x
  2. Step 2: Convert to fraction form
    56,943.60/85,213.80 = 49,628.40/x
  3. Step 3: Cross multiply
    56,943.60x = 85,213.80 × 49,628.40
  4. Step 4: Simplify right side
    56,943.60x = 4,229,024,551.92
  5. Step 5: Solve for x
    x = 4,229,024,551.92/56,943.60
  6. Step 6: Final answer
    x = 74,266.90

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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.