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Finding the Fourth Proportional to 66,160.91, 99,369.02 and 56,694.69

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Solution

The fourth proportional to 66,160.91, 99,369.02 and 56,694.69 is: 85,151.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,160.91 : 99,369.02 = 56,694.69 : x
  2. Step 2: Convert to fraction form
    66,160.91/99,369.02 = 56,694.69/x
  3. Step 3: Cross multiply
    66,160.91x = 99,369.02 × 56,694.69
  4. Step 4: Simplify right side
    66,160.91x = 5,633,695,004.19
  5. Step 5: Solve for x
    x = 5,633,695,004.19/66,160.91
  6. Step 6: Final answer
    x = 85,151.41

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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.