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Finding the Fourth Proportional to 74,666.60, 103,039.87 and 41,132.60

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Solution

The fourth proportional to 74,666.60, 103,039.87 and 41,132.60 is: 56,762.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,666.60 : 103,039.87 = 41,132.60 : x
  2. Step 2: Convert to fraction form
    74,666.60/103,039.87 = 41,132.60/x
  3. Step 3: Cross multiply
    74,666.60x = 103,039.87 × 41,132.60
  4. Step 4: Simplify right side
    74,666.60x = 4,238,297,911.53
  5. Step 5: Solve for x
    x = 4,238,297,911.53/74,666.60
  6. Step 6: Final answer
    x = 56,762.97

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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.