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Finding the Fourth Proportional to 113,789.65, 170,706.50 and 43,663.51

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Solution

The fourth proportional to 113,789.65, 170,706.50 and 43,663.51 is: 65,503.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,789.65 : 170,706.50 = 43,663.51 : x
  2. Step 2: Convert to fraction form
    113,789.65/170,706.50 = 43,663.51/x
  3. Step 3: Cross multiply
    113,789.65x = 170,706.50 × 43,663.51
  4. Step 4: Simplify right side
    113,789.65x = 7,453,645,046.75
  5. Step 5: Solve for x
    x = 7,453,645,046.75/113,789.65
  6. Step 6: Final answer
    x = 65,503.72

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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.