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Finding the Fourth Proportional to 354,580.40, 531,755.40 and 117,882.80

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Solution

The fourth proportional to 354,580.40, 531,755.40 and 117,882.80 is: 176,785.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,580.40 : 531,755.40 = 117,882.80 : x
  2. Step 2: Convert to fraction form
    354,580.40/531,755.40 = 117,882.80/x
  3. Step 3: Cross multiply
    354,580.40x = 531,755.40 × 117,882.80
  4. Step 4: Simplify right side
    354,580.40x = 62,684,815,467.12
  5. Step 5: Solve for x
    x = 62,684,815,467.12/354,580.40
  6. Step 6: Final answer
    x = 176,785.90

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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.