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Finding the Fourth Proportional to 354,551.18, 531,831.39 and 117,893.88

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Solution

The fourth proportional to 354,551.18, 531,831.39 and 117,893.88 is: 176,842.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,551.18 : 531,831.39 = 117,893.88 : x
  2. Step 2: Convert to fraction form
    354,551.18/531,831.39 = 117,893.88/x
  3. Step 3: Cross multiply
    354,551.18x = 531,831.39 × 117,893.88
  4. Step 4: Simplify right side
    354,551.18x = 62,699,666,072.89
  5. Step 5: Solve for x
    x = 62,699,666,072.89/354,551.18
  6. Step 6: Final answer
    x = 176,842.36

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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.