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Finding the Fourth Proportional to 183,781.72, 253,715.10 and 123,668.44

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Solution

The fourth proportional to 183,781.72, 253,715.10 and 123,668.44 is: 170,727.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,781.72 : 253,715.10 = 123,668.44 : x
  2. Step 2: Convert to fraction form
    183,781.72/253,715.10 = 123,668.44/x
  3. Step 3: Cross multiply
    183,781.72x = 253,715.10 × 123,668.44
  4. Step 4: Simplify right side
    183,781.72x = 31,376,550,621.44
  5. Step 5: Solve for x
    x = 31,376,550,621.44/183,781.72
  6. Step 6: Final answer
    x = 170,727.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.