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Finding the Fourth Proportional to 572,076.50, 789,465.57 and 317,468.66

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Solution

The fourth proportional to 572,076.50, 789,465.57 and 317,468.66 is: 438,106.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,076.50 : 789,465.57 = 317,468.66 : x
  2. Step 2: Convert to fraction form
    572,076.50/789,465.57 = 317,468.66/x
  3. Step 3: Cross multiply
    572,076.50x = 789,465.57 × 317,468.66
  4. Step 4: Simplify right side
    572,076.50x = 250,630,576,624.04
  5. Step 5: Solve for x
    x = 250,630,576,624.04/572,076.50
  6. Step 6: Final answer
    x = 438,106.75

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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.