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Finding the Fourth Proportional to 36,790, 55,053.72 and 31,876.48

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Solution

The fourth proportional to 36,790, 55,053.72 and 31,876.48 is: 47,700.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,790 : 55,053.72 = 31,876.48 : x
  2. Step 2: Convert to fraction form
    36,790/55,053.72 = 31,876.48/x
  3. Step 3: Cross multiply
    36,790x = 55,053.72 × 31,876.48
  4. Step 4: Simplify right side
    36,790x = 1,754,918,804.51
  5. Step 5: Solve for x
    x = 1,754,918,804.51/36,790
  6. Step 6: Final answer
    x = 47,700.97

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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.