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Finding the Fourth Proportional to 157,651.98, 236,476.41 and 72,238.65

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Solution

The fourth proportional to 157,651.98, 236,476.41 and 72,238.65 is: 108,357.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,651.98 : 236,476.41 = 72,238.65 : x
  2. Step 2: Convert to fraction form
    157,651.98/236,476.41 = 72,238.65/x
  3. Step 3: Cross multiply
    157,651.98x = 236,476.41 × 72,238.65
  4. Step 4: Simplify right side
    157,651.98x = 17,082,736,615.25
  5. Step 5: Solve for x
    x = 17,082,736,615.25/157,651.98
  6. Step 6: Final answer
    x = 108,357.26

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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.