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Finding the Fourth Proportional to 74,609.00, 111,913.50 and 71,369.51

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Solution

The fourth proportional to 74,609.00, 111,913.50 and 71,369.51 is: 107,054.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,609.00 : 111,913.50 = 71,369.51 : x
  2. Step 2: Convert to fraction form
    74,609.00/111,913.50 = 71,369.51/x
  3. Step 3: Cross multiply
    74,609.00x = 111,913.50 × 71,369.51
  4. Step 4: Simplify right side
    74,609.00x = 7,987,211,097.82
  5. Step 5: Solve for x
    x = 7,987,211,097.82/74,609.00
  6. Step 6: Final answer
    x = 107,054.26

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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.