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Finding the Fourth Proportional to 174,012.80, 261,019.20 and 169,638.80

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Solution

The fourth proportional to 174,012.80, 261,019.20 and 169,638.80 is: 254,458.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,012.80 : 261,019.20 = 169,638.80 : x
  2. Step 2: Convert to fraction form
    174,012.80/261,019.20 = 169,638.80/x
  3. Step 3: Cross multiply
    174,012.80x = 261,019.20 × 169,638.80
  4. Step 4: Simplify right side
    174,012.80x = 44,278,983,864.96
  5. Step 5: Solve for x
    x = 44,278,983,864.96/174,012.80
  6. Step 6: Final answer
    x = 254,458.20

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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.