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Finding the Fourth Proportional to 174,940.80, 262,411.20 and 86,367.30

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Solution

The fourth proportional to 174,940.80, 262,411.20 and 86,367.30 is: 129,550.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,940.80 : 262,411.20 = 86,367.30 : x
  2. Step 2: Convert to fraction form
    174,940.80/262,411.20 = 86,367.30/x
  3. Step 3: Cross multiply
    174,940.80x = 262,411.20 × 86,367.30
  4. Step 4: Simplify right side
    174,940.80x = 22,663,746,833.76
  5. Step 5: Solve for x
    x = 22,663,746,833.76/174,940.80
  6. Step 6: Final answer
    x = 129,550.95

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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.