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Finding the Fourth Proportional to 359,021.81, 538,632.62 and 156,635.62

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Solution

The fourth proportional to 359,021.81, 538,632.62 and 156,635.62 is: 234,997.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,021.81 : 538,632.62 = 156,635.62 : x
  2. Step 2: Convert to fraction form
    359,021.81/538,632.62 = 156,635.62/x
  3. Step 3: Cross multiply
    359,021.81x = 538,632.62 × 156,635.62
  4. Step 4: Simplify right side
    359,021.81x = 84,369,054,385.92
  5. Step 5: Solve for x
    x = 84,369,054,385.92/359,021.81
  6. Step 6: Final answer
    x = 234,997.02

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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.