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Finding the Fourth Proportional to 115,663.74, 173,512.88 and 36,780.54

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Solution

The fourth proportional to 115,663.74, 173,512.88 and 36,780.54 is: 55,176.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,663.74 : 173,512.88 = 36,780.54 : x
  2. Step 2: Convert to fraction form
    115,663.74/173,512.88 = 36,780.54/x
  3. Step 3: Cross multiply
    115,663.74x = 173,512.88 × 36,780.54
  4. Step 4: Simplify right side
    115,663.74x = 6,381,897,423.36
  5. Step 5: Solve for x
    x = 6,381,897,423.36/115,663.74
  6. Step 6: Final answer
    x = 55,176.30

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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.