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Finding the Fourth Proportional to 186,783, 280,174.68 and 60,529.20

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Solution

The fourth proportional to 186,783, 280,174.68 and 60,529.20 is: 90,793.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,783 : 280,174.68 = 60,529.20 : x
  2. Step 2: Convert to fraction form
    186,783/280,174.68 = 60,529.20/x
  3. Step 3: Cross multiply
    186,783x = 280,174.68 × 60,529.20
  4. Step 4: Simplify right side
    186,783x = 16,958,749,240.66
  5. Step 5: Solve for x
    x = 16,958,749,240.66/186,783
  6. Step 6: Final answer
    x = 90,793.86

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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.