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Finding the Fourth Proportional to 418,397.36, 627,243.39 and 181,561.67

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Solution

The fourth proportional to 418,397.36, 627,243.39 and 181,561.67 is: 272,189.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,397.36 : 627,243.39 = 181,561.67 : x
  2. Step 2: Convert to fraction form
    418,397.36/627,243.39 = 181,561.67/x
  3. Step 3: Cross multiply
    418,397.36x = 627,243.39 × 181,561.67
  4. Step 4: Simplify right side
    418,397.36x = 113,883,357,384.86
  5. Step 5: Solve for x
    x = 113,883,357,384.86/418,397.36
  6. Step 6: Final answer
    x = 272,189.47

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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.