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Finding the Fourth Proportional to 74,481.93, 102,807.23 and 42,672.02

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Solution

The fourth proportional to 74,481.93, 102,807.23 and 42,672.02 is: 58,900.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,481.93 : 102,807.23 = 42,672.02 : x
  2. Step 2: Convert to fraction form
    74,481.93/102,807.23 = 42,672.02/x
  3. Step 3: Cross multiply
    74,481.93x = 102,807.23 × 42,672.02
  4. Step 4: Simplify right side
    74,481.93x = 4,386,991,447.31
  5. Step 5: Solve for x
    x = 4,386,991,447.31/74,481.93
  6. Step 6: Final answer
    x = 58,900.08

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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.