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Finding the Fourth Proportional to 359,161.78, 538,698.66 and 92,900.20

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Solution

The fourth proportional to 359,161.78, 538,698.66 and 92,900.20 is: 139,338.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,161.78 : 538,698.66 = 92,900.20 : x
  2. Step 2: Convert to fraction form
    359,161.78/538,698.66 = 92,900.20/x
  3. Step 3: Cross multiply
    359,161.78x = 538,698.66 × 92,900.20
  4. Step 4: Simplify right side
    359,161.78x = 50,045,213,253.73
  5. Step 5: Solve for x
    x = 50,045,213,253.73/359,161.78
  6. Step 6: Final answer
    x = 139,338.92

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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.