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Finding the Fourth Proportional to 121,057.20, 181,615.02 and 37,951.20

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Solution

The fourth proportional to 121,057.20, 181,615.02 and 37,951.20 is: 56,935.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,057.20 : 181,615.02 = 37,951.20 : x
  2. Step 2: Convert to fraction form
    121,057.20/181,615.02 = 37,951.20/x
  3. Step 3: Cross multiply
    121,057.20x = 181,615.02 × 37,951.20
  4. Step 4: Simplify right side
    121,057.20x = 6,892,507,947.02
  5. Step 5: Solve for x
    x = 6,892,507,947.02/121,057.20
  6. Step 6: Final answer
    x = 56,935.96

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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.