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Finding the Fourth Proportional to 266,431.95, 399,647.93 and 192,073.95

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Solution

The fourth proportional to 266,431.95, 399,647.93 and 192,073.95 is: 288,110.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,431.95 : 399,647.93 = 192,073.95 : x
  2. Step 2: Convert to fraction form
    266,431.95/399,647.93 = 192,073.95/x
  3. Step 3: Cross multiply
    266,431.95x = 399,647.93 × 192,073.95
  4. Step 4: Simplify right side
    266,431.95x = 76,761,955,564.05
  5. Step 5: Solve for x
    x = 76,761,955,564.05/266,431.95
  6. Step 6: Final answer
    x = 288,110.93

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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.