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Finding the Fourth Proportional to 161,578.73, 242,478.81 and 56,397.69

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Solution

The fourth proportional to 161,578.73, 242,478.81 and 56,397.69 is: 84,635.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,578.73 : 242,478.81 = 56,397.69 : x
  2. Step 2: Convert to fraction form
    161,578.73/242,478.81 = 56,397.69/x
  3. Step 3: Cross multiply
    161,578.73x = 242,478.81 × 56,397.69
  4. Step 4: Simplify right side
    161,578.73x = 13,675,244,757.95
  5. Step 5: Solve for x
    x = 13,675,244,757.95/161,578.73
  6. Step 6: Final answer
    x = 84,635.18

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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.