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Finding the Fourth Proportional to 74,663.50, 103,035.63 and 41,129.50

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Solution

The fourth proportional to 74,663.50, 103,035.63 and 41,129.50 is: 56,758.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,663.50 : 103,035.63 = 41,129.50 : x
  2. Step 2: Convert to fraction form
    74,663.50/103,035.63 = 41,129.50/x
  3. Step 3: Cross multiply
    74,663.50x = 103,035.63 × 41,129.50
  4. Step 4: Simplify right side
    74,663.50x = 4,237,803,944.09
  5. Step 5: Solve for x
    x = 4,237,803,944.09/74,663.50
  6. Step 6: Final answer
    x = 56,758.71

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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.