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Finding the Fourth Proportional to 572,170.76, 789,515.05 and 342,674.27

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Solution

The fourth proportional to 572,170.76, 789,515.05 and 342,674.27 is: 472,842.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,170.76 : 789,515.05 = 342,674.27 : x
  2. Step 2: Convert to fraction form
    572,170.76/789,515.05 = 342,674.27/x
  3. Step 3: Cross multiply
    572,170.76x = 789,515.05 × 342,674.27
  4. Step 4: Simplify right side
    572,170.76x = 270,546,487,751.82
  5. Step 5: Solve for x
    x = 270,546,487,751.82/572,170.76
  6. Step 6: Final answer
    x = 472,842.22

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Double scale
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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.