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Finding the Fourth Proportional to 74,860, 103,306.80 and 41,326.24

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Solution

The fourth proportional to 74,860, 103,306.80 and 41,326.24 is: 57,030.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,860 : 103,306.80 = 41,326.24 : x
  2. Step 2: Convert to fraction form
    74,860/103,306.80 = 41,326.24/x
  3. Step 3: Cross multiply
    74,860x = 103,306.80 × 41,326.24
  4. Step 4: Simplify right side
    74,860x = 4,269,281,610.43
  5. Step 5: Solve for x
    x = 4,269,281,610.43/74,860
  6. Step 6: Final answer
    x = 57,030.21

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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.