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Finding the Fourth Proportional to 79,649.30, 119,490.29 and 66,592.91

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Solution

The fourth proportional to 79,649.30, 119,490.29 and 66,592.91 is: 99,903.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,649.30 : 119,490.29 = 66,592.91 : x
  2. Step 2: Convert to fraction form
    79,649.30/119,490.29 = 66,592.91/x
  3. Step 3: Cross multiply
    79,649.30x = 119,490.29 × 66,592.91
  4. Step 4: Simplify right side
    79,649.30x = 7,957,205,794.88
  5. Step 5: Solve for x
    x = 7,957,205,794.88/79,649.30
  6. Step 6: Final answer
    x = 99,903.02

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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.