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Finding the Fourth Proportional to 58,379.74, 87,582.42 and 18,940.84

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Solution

The fourth proportional to 58,379.74, 87,582.42 and 18,940.84 is: 28,415.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,379.74 : 87,582.42 = 18,940.84 : x
  2. Step 2: Convert to fraction form
    58,379.74/87,582.42 = 18,940.84/x
  3. Step 3: Cross multiply
    58,379.74x = 87,582.42 × 18,940.84
  4. Step 4: Simplify right side
    58,379.74x = 1,658,884,604.03
  5. Step 5: Solve for x
    x = 1,658,884,604.03/58,379.74
  6. Step 6: Final answer
    x = 28,415.42

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1.5x scale

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.