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Finding the Fourth Proportional to 572,373.54, 789,874.74 and 317,724.12

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Solution

The fourth proportional to 572,373.54, 789,874.74 and 317,724.12 is: 438,458.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,373.54 : 789,874.74 = 317,724.12 : x
  2. Step 2: Convert to fraction form
    572,373.54/789,874.74 = 317,724.12/x
  3. Step 3: Cross multiply
    572,373.54x = 789,874.74 × 317,724.12
  4. Step 4: Simplify right side
    572,373.54x = 250,962,256,676.73
  5. Step 5: Solve for x
    x = 250,962,256,676.73/572,373.54
  6. Step 6: Final answer
    x = 438,458.87

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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.