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Finding the Fourth Proportional to 120,897.99, 181,366.62 and 36,638.43

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Solution

The fourth proportional to 120,897.99, 181,366.62 and 36,638.43 is: 54,963.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,897.99 : 181,366.62 = 36,638.43 : x
  2. Step 2: Convert to fraction form
    120,897.99/181,366.62 = 36,638.43/x
  3. Step 3: Cross multiply
    120,897.99x = 181,366.62 × 36,638.43
  4. Step 4: Simplify right side
    120,897.99x = 6,644,988,211.21
  5. Step 5: Solve for x
    x = 6,644,988,211.21/120,897.99
  6. Step 6: Final answer
    x = 54,963.60

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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.