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Finding the Fourth Proportional to 619,234.80, 928,852.20 and 198,553.20

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Solution

The fourth proportional to 619,234.80, 928,852.20 and 198,553.20 is: 297,829.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,234.80 : 928,852.20 = 198,553.20 : x
  2. Step 2: Convert to fraction form
    619,234.80/928,852.20 = 198,553.20/x
  3. Step 3: Cross multiply
    619,234.80x = 928,852.20 × 198,553.20
  4. Step 4: Simplify right side
    619,234.80x = 184,426,576,637.04
  5. Step 5: Solve for x
    x = 184,426,576,637.04/619,234.80
  6. Step 6: Final answer
    x = 297,829.80

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.