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Finding the Fourth Proportional to 543,278.70, 814,918.05 and 342,512.10

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Solution

The fourth proportional to 543,278.70, 814,918.05 and 342,512.10 is: 513,768.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,278.70 : 814,918.05 = 342,512.10 : x
  2. Step 2: Convert to fraction form
    543,278.70/814,918.05 = 342,512.10/x
  3. Step 3: Cross multiply
    543,278.70x = 814,918.05 × 342,512.10
  4. Step 4: Simplify right side
    543,278.70x = 279,119,292,633.41
  5. Step 5: Solve for x
    x = 279,119,292,633.41/543,278.70
  6. Step 6: Final answer
    x = 513,768.15

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.