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Finding the Fourth Proportional to 74,891.79, 103,345.88 and 43,062.03

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Solution

The fourth proportional to 74,891.79, 103,345.88 and 43,062.03 is: 59,422.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,891.79 : 103,345.88 = 43,062.03 : x
  2. Step 2: Convert to fraction form
    74,891.79/103,345.88 = 43,062.03/x
  3. Step 3: Cross multiply
    74,891.79x = 103,345.88 × 43,062.03
  4. Step 4: Simplify right side
    74,891.79x = 4,450,283,169.63
  5. Step 5: Solve for x
    x = 4,450,283,169.63/74,891.79
  6. Step 6: Final answer
    x = 59,422.84

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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.