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Finding the Fourth Proportional to 551,416.40, 827,124.60 and 235,905.20

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Solution

The fourth proportional to 551,416.40, 827,124.60 and 235,905.20 is: 353,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,416.40 : 827,124.60 = 235,905.20 : x
  2. Step 2: Convert to fraction form
    551,416.40/827,124.60 = 235,905.20/x
  3. Step 3: Cross multiply
    551,416.40x = 827,124.60 × 235,905.20
  4. Step 4: Simplify right side
    551,416.40x = 195,122,994,187.92
  5. Step 5: Solve for x
    x = 195,122,994,187.92/551,416.40
  6. Step 6: Final answer
    x = 353,857.80

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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.