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Finding the Fourth Proportional to 167,865.32, 251,681.34 and 74,320.04

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Solution

The fourth proportional to 167,865.32, 251,681.34 and 74,320.04 is: 111,428.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,865.32 : 251,681.34 = 74,320.04 : x
  2. Step 2: Convert to fraction form
    167,865.32/251,681.34 = 74,320.04/x
  3. Step 3: Cross multiply
    167,865.32x = 251,681.34 × 74,320.04
  4. Step 4: Simplify right side
    167,865.32x = 18,704,967,256.05
  5. Step 5: Solve for x
    x = 18,704,967,256.05/167,865.32
  6. Step 6: Final answer
    x = 111,428.42

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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.