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Finding the Fourth Proportional to 187,696.44, 280,838.34 and 131,645.93

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Solution

The fourth proportional to 187,696.44, 280,838.34 and 131,645.93 is: 196,973.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,696.44 : 280,838.34 = 131,645.93 : x
  2. Step 2: Convert to fraction form
    187,696.44/280,838.34 = 131,645.93/x
  3. Step 3: Cross multiply
    187,696.44x = 280,838.34 × 131,645.93
  4. Step 4: Simplify right side
    187,696.44x = 36,971,223,044.76
  5. Step 5: Solve for x
    x = 36,971,223,044.76/187,696.44
  6. Step 6: Final answer
    x = 196,973.49

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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.