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Finding the Fourth Proportional to 561,331.20, 841,996.80 and 384,184.20

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Solution

The fourth proportional to 561,331.20, 841,996.80 and 384,184.20 is: 576,276.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,331.20 : 841,996.80 = 384,184.20 : x
  2. Step 2: Convert to fraction form
    561,331.20/841,996.80 = 384,184.20/x
  3. Step 3: Cross multiply
    561,331.20x = 841,996.80 × 384,184.20
  4. Step 4: Simplify right side
    561,331.20x = 323,481,867,010.56
  5. Step 5: Solve for x
    x = 323,481,867,010.56/561,331.20
  6. Step 6: Final answer
    x = 576,276.30

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Double scale
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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.