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Finding the Fourth Proportional to 74,608.58, 102,969.68 and 42,771.32

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Solution

The fourth proportional to 74,608.58, 102,969.68 and 42,771.32 is: 59,030.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,608.58 : 102,969.68 = 42,771.32 : x
  2. Step 2: Convert to fraction form
    74,608.58/102,969.68 = 42,771.32/x
  3. Step 3: Cross multiply
    74,608.58x = 102,969.68 × 42,771.32
  4. Step 4: Simplify right side
    74,608.58x = 4,404,149,133.58
  5. Step 5: Solve for x
    x = 4,404,149,133.58/74,608.58
  6. Step 6: Final answer
    x = 59,030.06

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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.