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Finding the Fourth Proportional to 190,373.76, 285,596.67 and 76,530.38

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Solution

The fourth proportional to 190,373.76, 285,596.67 and 76,530.38 is: 114,810.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,373.76 : 285,596.67 = 76,530.38 : x
  2. Step 2: Convert to fraction form
    190,373.76/285,596.67 = 76,530.38/x
  3. Step 3: Cross multiply
    190,373.76x = 285,596.67 × 76,530.38
  4. Step 4: Simplify right side
    190,373.76x = 21,856,820,253.85
  5. Step 5: Solve for x
    x = 21,856,820,253.85/190,373.76
  6. Step 6: Final answer
    x = 114,810.05

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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.