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Finding the Fourth Proportional to 359,491.20, 539,161.20 and 181,831.20

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Solution

The fourth proportional to 359,491.20, 539,161.20 and 181,831.20 is: 272,708.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,491.20 : 539,161.20 = 181,831.20 : x
  2. Step 2: Convert to fraction form
    359,491.20/539,161.20 = 181,831.20/x
  3. Step 3: Cross multiply
    359,491.20x = 539,161.20 × 181,831.20
  4. Step 4: Simplify right side
    359,491.20x = 98,036,327,989.44
  5. Step 5: Solve for x
    x = 98,036,327,989.44/359,491.20
  6. Step 6: Final answer
    x = 272,708.56

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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.