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Finding the Fourth Proportional to 572,339.48, 789,788.95 and 317,670.62

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Solution

The fourth proportional to 572,339.48, 789,788.95 and 317,670.62 is: 438,363.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,339.48 : 789,788.95 = 317,670.62 : x
  2. Step 2: Convert to fraction form
    572,339.48/789,788.95 = 317,670.62/x
  3. Step 3: Cross multiply
    572,339.48x = 789,788.95 × 317,670.62
  4. Step 4: Simplify right side
    572,339.48x = 250,892,740,672.53
  5. Step 5: Solve for x
    x = 250,892,740,672.53/572,339.48
  6. Step 6: Final answer
    x = 438,363.51

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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.