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Finding the Fourth Proportional to 79,690.40, 119,276.40 and 62,064.80

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Solution

The fourth proportional to 79,690.40, 119,276.40 and 62,064.80 is: 92,895.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,690.40 : 119,276.40 = 62,064.80 : x
  2. Step 2: Convert to fraction form
    79,690.40/119,276.40 = 62,064.80/x
  3. Step 3: Cross multiply
    79,690.40x = 119,276.40 × 62,064.80
  4. Step 4: Simplify right side
    79,690.40x = 7,402,865,910.72
  5. Step 5: Solve for x
    x = 7,402,865,910.72/79,690.40
  6. Step 6: Final answer
    x = 92,895.33

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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.