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Finding the Fourth Proportional to 117,696.88, 176,478 and 38,789.92

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Solution

The fourth proportional to 117,696.88, 176,478 and 38,789.92 is: 58,162.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,696.88 : 176,478 = 38,789.92 : x
  2. Step 2: Convert to fraction form
    117,696.88/176,478 = 38,789.92/x
  3. Step 3: Cross multiply
    117,696.88x = 176,478 × 38,789.92
  4. Step 4: Simplify right side
    117,696.88x = 6,845,567,501.76
  5. Step 5: Solve for x
    x = 6,845,567,501.76/117,696.88
  6. Step 6: Final answer
    x = 58,162.69

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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.