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Finding the Fourth Proportional to 74,952.70, 103,434.66 and 41,418.70

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Solution

The fourth proportional to 74,952.70, 103,434.66 and 41,418.70 is: 57,157.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,952.70 : 103,434.66 = 41,418.70 : x
  2. Step 2: Convert to fraction form
    74,952.70/103,434.66 = 41,418.70/x
  3. Step 3: Cross multiply
    74,952.70x = 103,434.66 × 41,418.70
  4. Step 4: Simplify right side
    74,952.70x = 4,284,129,152.14
  5. Step 5: Solve for x
    x = 4,284,129,152.14/74,952.70
  6. Step 6: Final answer
    x = 57,157.77

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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.