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Finding the Fourth Proportional to 172,126.80, 258,190.20 and 96,019.20

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Solution

The fourth proportional to 172,126.80, 258,190.20 and 96,019.20 is: 144,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,126.80 : 258,190.20 = 96,019.20 : x
  2. Step 2: Convert to fraction form
    172,126.80/258,190.20 = 96,019.20/x
  3. Step 3: Cross multiply
    172,126.80x = 258,190.20 × 96,019.20
  4. Step 4: Simplify right side
    172,126.80x = 24,791,216,451.84
  5. Step 5: Solve for x
    x = 24,791,216,451.84/172,126.80
  6. Step 6: Final answer
    x = 144,028.80

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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.