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Finding the Fourth Proportional to 354,554.20, 531,879.90 and 117,872.20

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Solution

The fourth proportional to 354,554.20, 531,879.90 and 117,872.20 is: 176,824.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,554.20 : 531,879.90 = 117,872.20 : x
  2. Step 2: Convert to fraction form
    354,554.20/531,879.90 = 117,872.20/x
  3. Step 3: Cross multiply
    354,554.20x = 531,879.90 × 117,872.20
  4. Step 4: Simplify right side
    354,554.20x = 62,693,853,948.78
  5. Step 5: Solve for x
    x = 62,693,853,948.78/354,554.20
  6. Step 6: Final answer
    x = 176,824.46

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1.5x scale

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.