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Finding the Fourth Proportional to 190,624.96, 285,950.76 and 78,310.84

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Solution

The fourth proportional to 190,624.96, 285,950.76 and 78,310.84 is: 117,471.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,624.96 : 285,950.76 = 78,310.84 : x
  2. Step 2: Convert to fraction form
    190,624.96/285,950.76 = 78,310.84/x
  3. Step 3: Cross multiply
    190,624.96x = 285,950.76 × 78,310.84
  4. Step 4: Simplify right side
    190,624.96x = 22,393,044,214.24
  5. Step 5: Solve for x
    x = 22,393,044,214.24/190,624.96
  6. Step 6: Final answer
    x = 117,471.73

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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.