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Finding the Fourth Proportional to 174,903.80, 262,053.30 and 81,217.40

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Solution

The fourth proportional to 174,903.80, 262,053.30 and 81,217.40 is: 121,685.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,903.80 : 262,053.30 = 81,217.40 : x
  2. Step 2: Convert to fraction form
    174,903.80/262,053.30 = 81,217.40/x
  3. Step 3: Cross multiply
    174,903.80x = 262,053.30 × 81,217.40
  4. Step 4: Simplify right side
    174,903.80x = 21,283,287,687.42
  5. Step 5: Solve for x
    x = 21,283,287,687.42/174,903.80
  6. Step 6: Final answer
    x = 121,685.68

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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.