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Finding the Fourth Proportional to 58,205.80, 80,295.78 and 39,341.80

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Solution

The fourth proportional to 58,205.80, 80,295.78 and 39,341.80 is: 54,272.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,205.80 : 80,295.78 = 39,341.80 : x
  2. Step 2: Convert to fraction form
    58,205.80/80,295.78 = 39,341.80/x
  3. Step 3: Cross multiply
    58,205.80x = 80,295.78 × 39,341.80
  4. Step 4: Simplify right side
    58,205.80x = 3,158,980,517.60
  5. Step 5: Solve for x
    x = 3,158,980,517.60/58,205.80
  6. Step 6: Final answer
    x = 54,272.61

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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.