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Finding the Fourth Proportional to 74,663.80, 103,036.04 and 41,129.80

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Solution

The fourth proportional to 74,663.80, 103,036.04 and 41,129.80 is: 56,759.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,663.80 : 103,036.04 = 41,129.80 : x
  2. Step 2: Convert to fraction form
    74,663.80/103,036.04 = 41,129.80/x
  3. Step 3: Cross multiply
    74,663.80x = 103,036.04 × 41,129.80
  4. Step 4: Simplify right side
    74,663.80x = 4,237,851,717.99
  5. Step 5: Solve for x
    x = 4,237,851,717.99/74,663.80
  6. Step 6: Final answer
    x = 56,759.12

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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.