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Finding the Fourth Proportional to 74,563.20, 102,845.70 and 62,264.70

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Solution

The fourth proportional to 74,563.20, 102,845.70 and 62,264.70 is: 85,882.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,563.20 : 102,845.70 = 62,264.70 : x
  2. Step 2: Convert to fraction form
    74,563.20/102,845.70 = 62,264.70/x
  3. Step 3: Cross multiply
    74,563.20x = 102,845.70 × 62,264.70
  4. Step 4: Simplify right side
    74,563.20x = 6,403,656,656.79
  5. Step 5: Solve for x
    x = 6,403,656,656.79/74,563.20
  6. Step 6: Final answer
    x = 85,882.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.