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Finding the Fourth Proportional to 168,578.82, 252,904.68 and 89,681.58

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Solution

The fourth proportional to 168,578.82, 252,904.68 and 89,681.58 is: 134,541.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,578.82 : 252,904.68 = 89,681.58 : x
  2. Step 2: Convert to fraction form
    168,578.82/252,904.68 = 89,681.58/x
  3. Step 3: Cross multiply
    168,578.82x = 252,904.68 × 89,681.58
  4. Step 4: Simplify right side
    168,578.82x = 22,680,891,291.79
  5. Step 5: Solve for x
    x = 22,680,891,291.79/168,578.82
  6. Step 6: Final answer
    x = 134,541.76

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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.