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Finding the Fourth Proportional to 455,056.44, 626,952.33 and 317,105.34

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Solution

The fourth proportional to 455,056.44, 626,952.33 and 317,105.34 is: 436,890.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,056.44 : 626,952.33 = 317,105.34 : x
  2. Step 2: Convert to fraction form
    455,056.44/626,952.33 = 317,105.34/x
  3. Step 3: Cross multiply
    455,056.44x = 626,952.33 × 317,105.34
  4. Step 4: Simplify right side
    455,056.44x = 198,809,931,768.44
  5. Step 5: Solve for x
    x = 198,809,931,768.44/455,056.44
  6. Step 6: Final answer
    x = 436,890.71

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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.