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Finding the Fourth Proportional to 58,679.36, 80,995.84 and 39,586.80

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Solution

The fourth proportional to 58,679.36, 80,995.84 and 39,586.80 is: 54,642.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,679.36 : 80,995.84 = 39,586.80 : x
  2. Step 2: Convert to fraction form
    58,679.36/80,995.84 = 39,586.80/x
  3. Step 3: Cross multiply
    58,679.36x = 80,995.84 × 39,586.80
  4. Step 4: Simplify right side
    58,679.36x = 3,206,366,118.91
  5. Step 5: Solve for x
    x = 3,206,366,118.91/58,679.36
  6. Step 6: Final answer
    x = 54,642.15

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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.