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Finding the Fourth Proportional to 121,310.56, 181,998.60 and 37,068.42

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Solution

The fourth proportional to 121,310.56, 181,998.60 and 37,068.42 is: 55,612.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,310.56 : 181,998.60 = 37,068.42 : x
  2. Step 2: Convert to fraction form
    121,310.56/181,998.60 = 37,068.42/x
  3. Step 3: Cross multiply
    121,310.56x = 181,998.60 × 37,068.42
  4. Step 4: Simplify right side
    121,310.56x = 6,746,400,063.96
  5. Step 5: Solve for x
    x = 6,746,400,063.96/121,310.56
  6. Step 6: Final answer
    x = 55,612.64

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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.