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Finding the Fourth Proportional to 74,864.88, 103,313.60 and 41,330.88

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Solution

The fourth proportional to 74,864.88, 103,313.60 and 41,330.88 is: 57,036.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,864.88 : 103,313.60 = 41,330.88 : x
  2. Step 2: Convert to fraction form
    74,864.88/103,313.60 = 41,330.88/x
  3. Step 3: Cross multiply
    74,864.88x = 103,313.60 × 41,330.88
  4. Step 4: Simplify right side
    74,864.88x = 4,270,042,003.97
  5. Step 5: Solve for x
    x = 4,270,042,003.97/74,864.88
  6. Step 6: Final answer
    x = 57,036.65

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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.