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Finding the Fourth Proportional to 614,680.80, 922,021.20 and 193,999.20

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Solution

The fourth proportional to 614,680.80, 922,021.20 and 193,999.20 is: 290,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,680.80 : 922,021.20 = 193,999.20 : x
  2. Step 2: Convert to fraction form
    614,680.80/922,021.20 = 193,999.20/x
  3. Step 3: Cross multiply
    614,680.80x = 922,021.20 × 193,999.20
  4. Step 4: Simplify right side
    614,680.80x = 178,871,375,183.04
  5. Step 5: Solve for x
    x = 178,871,375,183.04/614,680.80
  6. Step 6: Final answer
    x = 290,998.80

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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.