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Finding the Fourth Proportional to 74,244.50, 102,462.30 and 40,710.50

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Solution

The fourth proportional to 74,244.50, 102,462.30 and 40,710.50 is: 56,183.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,244.50 : 102,462.30 = 40,710.50 : x
  2. Step 2: Convert to fraction form
    74,244.50/102,462.30 = 40,710.50/x
  3. Step 3: Cross multiply
    74,244.50x = 102,462.30 × 40,710.50
  4. Step 4: Simplify right side
    74,244.50x = 4,171,291,464.15
  5. Step 5: Solve for x
    x = 4,171,291,464.15/74,244.50
  6. Step 6: Final answer
    x = 56,183.17

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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.