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Finding the Fourth Proportional to 353,504.34, 487,831.89 and 192,356.61

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Solution

The fourth proportional to 353,504.34, 487,831.89 and 192,356.61 is: 265,449.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,504.34 : 487,831.89 = 192,356.61 : x
  2. Step 2: Convert to fraction form
    353,504.34/487,831.89 = 192,356.61/x
  3. Step 3: Cross multiply
    353,504.34x = 487,831.89 × 192,356.61
  4. Step 4: Simplify right side
    353,504.34x = 93,837,688,610.29
  5. Step 5: Solve for x
    x = 93,837,688,610.29/353,504.34
  6. Step 6: Final answer
    x = 265,449.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.