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Finding the Fourth Proportional to 74,404.80, 111,464.64 and 71,903.52

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Solution

The fourth proportional to 74,404.80, 111,464.64 and 71,903.52 is: 107,717.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,404.80 : 111,464.64 = 71,903.52 : x
  2. Step 2: Convert to fraction form
    74,404.80/111,464.64 = 71,903.52/x
  3. Step 3: Cross multiply
    74,404.80x = 111,464.64 × 71,903.52
  4. Step 4: Simplify right side
    74,404.80x = 8,014,699,971.53
  5. Step 5: Solve for x
    x = 8,014,699,971.53/74,404.80
  6. Step 6: Final answer
    x = 107,717.51

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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.