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Finding the Fourth Proportional to 572,014.25, 789,379.76 and 317,364.83

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Solution

The fourth proportional to 572,014.25, 789,379.76 and 317,364.83 is: 437,963.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,014.25 : 789,379.76 = 317,364.83 : x
  2. Step 2: Convert to fraction form
    572,014.25/789,379.76 = 317,364.83/x
  3. Step 3: Cross multiply
    572,014.25x = 789,379.76 × 317,364.83
  4. Step 4: Simplify right side
    572,014.25x = 250,521,373,337.84
  5. Step 5: Solve for x
    x = 250,521,373,337.84/572,014.25
  6. Step 6: Final answer
    x = 437,963.52

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Double scale
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Similar ratio
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1.5x scale

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.