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Finding the Fourth Proportional to 74,606.98, 111,877.63 and 39,538.42

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Solution

The fourth proportional to 74,606.98, 111,877.63 and 39,538.42 is: 59,290.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,606.98 : 111,877.63 = 39,538.42 : x
  2. Step 2: Convert to fraction form
    74,606.98/111,877.63 = 39,538.42/x
  3. Step 3: Cross multiply
    74,606.98x = 111,877.63 × 39,538.42
  4. Step 4: Simplify right side
    74,606.98x = 4,423,464,723.54
  5. Step 5: Solve for x
    x = 4,423,464,723.54/74,606.98
  6. Step 6: Final answer
    x = 59,290.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.