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Finding the Fourth Proportional to 74,991.34, 103,490.80 and 41,002.08

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Solution

The fourth proportional to 74,991.34, 103,490.80 and 41,002.08 is: 56,584.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,991.34 : 103,490.80 = 41,002.08 : x
  2. Step 2: Convert to fraction form
    74,991.34/103,490.80 = 41,002.08/x
  3. Step 3: Cross multiply
    74,991.34x = 103,490.80 × 41,002.08
  4. Step 4: Simplify right side
    74,991.34x = 4,243,338,060.86
  5. Step 5: Solve for x
    x = 4,243,338,060.86/74,991.34
  6. Step 6: Final answer
    x = 56,584.37

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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.