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Finding the Fourth Proportional to 46,979.20, 70,339.20 and 36,611.20

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Solution

The fourth proportional to 46,979.20, 70,339.20 and 36,611.20 is: 54,815.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,979.20 : 70,339.20 = 36,611.20 : x
  2. Step 2: Convert to fraction form
    46,979.20/70,339.20 = 36,611.20/x
  3. Step 3: Cross multiply
    46,979.20x = 70,339.20 × 36,611.20
  4. Step 4: Simplify right side
    46,979.20x = 2,575,202,519.04
  5. Step 5: Solve for x
    x = 2,575,202,519.04/46,979.20
  6. Step 6: Final answer
    x = 54,815.80

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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.