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Finding the Fourth Proportional to 113,806.62, 170,731.90 and 43,680.47

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Solution

The fourth proportional to 113,806.62, 170,731.90 and 43,680.47 is: 65,529.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,806.62 : 170,731.90 = 43,680.47 : x
  2. Step 2: Convert to fraction form
    113,806.62/170,731.90 = 43,680.47/x
  3. Step 3: Cross multiply
    113,806.62x = 170,731.90 × 43,680.47
  4. Step 4: Simplify right side
    113,806.62x = 7,457,648,836.93
  5. Step 5: Solve for x
    x = 7,457,648,836.93/113,806.62
  6. Step 6: Final answer
    x = 65,529.13

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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.