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Finding the Fourth Proportional to 115,956.84, 160,020.80 and 67,587.39

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Solution

The fourth proportional to 115,956.84, 160,020.80 and 67,587.39 is: 93,270.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,956.84 : 160,020.80 = 67,587.39 : x
  2. Step 2: Convert to fraction form
    115,956.84/160,020.80 = 67,587.39/x
  3. Step 3: Cross multiply
    115,956.84x = 160,020.80 × 67,587.39
  4. Step 4: Simplify right side
    115,956.84x = 10,815,388,217.71
  5. Step 5: Solve for x
    x = 10,815,388,217.71/115,956.84
  6. Step 6: Final answer
    x = 93,270.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.