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Finding the Fourth Proportional to 181,614.66, 272,421.54 and 86,556.72

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Solution

The fourth proportional to 181,614.66, 272,421.54 and 86,556.72 is: 129,834.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,614.66 : 272,421.54 = 86,556.72 : x
  2. Step 2: Convert to fraction form
    181,614.66/272,421.54 = 86,556.72/x
  3. Step 3: Cross multiply
    181,614.66x = 272,421.54 × 86,556.72
  4. Step 4: Simplify right side
    181,614.66x = 23,579,914,959.75
  5. Step 5: Solve for x
    x = 23,579,914,959.75/181,614.66
  6. Step 6: Final answer
    x = 129,834.87

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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.