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Finding the Fourth Proportional to 67,455.61, 101,165.78 and 20,057.94

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Solution

The fourth proportional to 67,455.61, 101,165.78 and 20,057.94 is: 30,081.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,455.61 : 101,165.78 = 20,057.94 : x
  2. Step 2: Convert to fraction form
    67,455.61/101,165.78 = 20,057.94/x
  3. Step 3: Cross multiply
    67,455.61x = 101,165.78 × 20,057.94
  4. Step 4: Simplify right side
    67,455.61x = 2,029,176,792.09
  5. Step 5: Solve for x
    x = 2,029,176,792.09/67,455.61
  6. Step 6: Final answer
    x = 30,081.66

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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.