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Finding the Fourth Proportional to 333,327.20, 499,990.80 and 84,009.20

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Solution

The fourth proportional to 333,327.20, 499,990.80 and 84,009.20 is: 126,013.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,327.20 : 499,990.80 = 84,009.20 : x
  2. Step 2: Convert to fraction form
    333,327.20/499,990.80 = 84,009.20/x
  3. Step 3: Cross multiply
    333,327.20x = 499,990.80 × 84,009.20
  4. Step 4: Simplify right side
    333,327.20x = 42,003,827,115.36
  5. Step 5: Solve for x
    x = 42,003,827,115.36/333,327.20
  6. Step 6: Final answer
    x = 126,013.80

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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.