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Finding the Fourth Proportional to 190,429.28, 285,676.32 and 65,741.12

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Solution

The fourth proportional to 190,429.28, 285,676.32 and 65,741.12 is: 98,622.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,429.28 : 285,676.32 = 65,741.12 : x
  2. Step 2: Convert to fraction form
    190,429.28/285,676.32 = 65,741.12/x
  3. Step 3: Cross multiply
    190,429.28x = 285,676.32 × 65,741.12
  4. Step 4: Simplify right side
    190,429.28x = 18,780,681,234.28
  5. Step 5: Solve for x
    x = 18,780,681,234.28/190,429.28
  6. Step 6: Final answer
    x = 98,622.87

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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.