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Finding the Fourth Proportional to 393,805.02, 590,678.98 and 153,873.81

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Solution

The fourth proportional to 393,805.02, 590,678.98 and 153,873.81 is: 230,799.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,805.02 : 590,678.98 = 153,873.81 : x
  2. Step 2: Convert to fraction form
    393,805.02/590,678.98 = 153,873.81/x
  3. Step 3: Cross multiply
    393,805.02x = 590,678.98 × 153,873.81
  4. Step 4: Simplify right side
    393,805.02x = 90,890,025,620.37
  5. Step 5: Solve for x
    x = 90,890,025,620.37/393,805.02
  6. Step 6: Final answer
    x = 230,799.56

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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.