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Finding the Fourth Proportional to 266,195.10, 399,292.65 and 133,095.90

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Solution

The fourth proportional to 266,195.10, 399,292.65 and 133,095.90 is: 199,643.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,195.10 : 399,292.65 = 133,095.90 : x
  2. Step 2: Convert to fraction form
    266,195.10/399,292.65 = 133,095.90/x
  3. Step 3: Cross multiply
    266,195.10x = 399,292.65 × 133,095.90
  4. Step 4: Simplify right side
    266,195.10x = 53,144,214,615.14
  5. Step 5: Solve for x
    x = 53,144,214,615.14/266,195.10
  6. Step 6: Final answer
    x = 199,643.85

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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.