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Finding the Fourth Proportional to 190,509.30, 285,895.17 and 65,850.30

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Solution

The fourth proportional to 190,509.30, 285,895.17 and 65,850.30 is: 98,820.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,509.30 : 285,895.17 = 65,850.30 : x
  2. Step 2: Convert to fraction form
    190,509.30/285,895.17 = 65,850.30/x
  3. Step 3: Cross multiply
    190,509.30x = 285,895.17 × 65,850.30
  4. Step 4: Simplify right side
    190,509.30x = 18,826,282,713.05
  5. Step 5: Solve for x
    x = 18,826,282,713.05/190,509.30
  6. Step 6: Final answer
    x = 98,820.81

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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.