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Finding the Fourth Proportional to 74,953.70, 103,436.04 and 41,419.70

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Solution

The fourth proportional to 74,953.70, 103,436.04 and 41,419.70 is: 57,159.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,953.70 : 103,436.04 = 41,419.70 : x
  2. Step 2: Convert to fraction form
    74,953.70/103,436.04 = 41,419.70/x
  3. Step 3: Cross multiply
    74,953.70x = 103,436.04 × 41,419.70
  4. Step 4: Simplify right side
    74,953.70x = 4,284,289,745.99
  5. Step 5: Solve for x
    x = 4,284,289,745.99/74,953.70
  6. Step 6: Final answer
    x = 57,159.15

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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.