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Finding the Fourth Proportional to 120,843.19, 181,283.21 and 61,646.57

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Solution

The fourth proportional to 120,843.19, 181,283.21 and 61,646.57 is: 92,479.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,843.19 : 181,283.21 = 61,646.57 : x
  2. Step 2: Convert to fraction form
    120,843.19/181,283.21 = 61,646.57/x
  3. Step 3: Cross multiply
    120,843.19x = 181,283.21 × 61,646.57
  4. Step 4: Simplify right side
    120,843.19x = 11,175,488,095.09
  5. Step 5: Solve for x
    x = 11,175,488,095.09/120,843.19
  6. Step 6: Final answer
    x = 92,479.25

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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.