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Finding the Fourth Proportional to 58,391.30, 80,579.98 and 31,533.80

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Solution

The fourth proportional to 58,391.30, 80,579.98 and 31,533.80 is: 43,516.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,391.30 : 80,579.98 = 31,533.80 : x
  2. Step 2: Convert to fraction form
    58,391.30/80,579.98 = 31,533.80/x
  3. Step 3: Cross multiply
    58,391.30x = 80,579.98 × 31,533.80
  4. Step 4: Simplify right side
    58,391.30x = 2,540,992,815.66
  5. Step 5: Solve for x
    x = 2,540,992,815.66/58,391.30
  6. Step 6: Final answer
    x = 43,516.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.