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Finding the Fourth Proportional to 354,368.32, 531,404.68 and 111,146.73

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Solution

The fourth proportional to 354,368.32, 531,404.68 and 111,146.73 is: 166,673.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,368.32 : 531,404.68 = 111,146.73 : x
  2. Step 2: Convert to fraction form
    354,368.32/531,404.68 = 111,146.73/x
  3. Step 3: Cross multiply
    354,368.32x = 531,404.68 × 111,146.73
  4. Step 4: Simplify right side
    354,368.32x = 59,063,892,488.70
  5. Step 5: Solve for x
    x = 59,063,892,488.70/354,368.32
  6. Step 6: Final answer
    x = 166,673.74

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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.