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Finding the Fourth Proportional to 211,092.67, 316,630.20 and 61,329.95

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Solution

The fourth proportional to 211,092.67, 316,630.20 and 61,329.95 is: 91,992.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,092.67 : 316,630.20 = 61,329.95 : x
  2. Step 2: Convert to fraction form
    211,092.67/316,630.20 = 61,329.95/x
  3. Step 3: Cross multiply
    211,092.67x = 316,630.20 × 61,329.95
  4. Step 4: Simplify right side
    211,092.67x = 19,418,914,334.49
  5. Step 5: Solve for x
    x = 19,418,914,334.49/211,092.67
  6. Step 6: Final answer
    x = 91,992.37

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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.