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Finding the Fourth Proportional to 121,873.65, 182,833.37 and 55,318.46

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Solution

The fourth proportional to 121,873.65, 182,833.37 and 55,318.46 is: 82,988.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,873.65 : 182,833.37 = 55,318.46 : x
  2. Step 2: Convert to fraction form
    121,873.65/182,833.37 = 55,318.46/x
  3. Step 3: Cross multiply
    121,873.65x = 182,833.37 × 55,318.46
  4. Step 4: Simplify right side
    121,873.65x = 10,114,059,855.49
  5. Step 5: Solve for x
    x = 10,114,059,855.49/121,873.65
  6. Step 6: Final answer
    x = 82,988.08

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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.