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Finding the Fourth Proportional to 393,345.36, 590,018.58 and 168,559.98

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Solution

The fourth proportional to 393,345.36, 590,018.58 and 168,559.98 is: 252,840.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,345.36 : 590,018.58 = 168,559.98 : x
  2. Step 2: Convert to fraction form
    393,345.36/590,018.58 = 168,559.98/x
  3. Step 3: Cross multiply
    393,345.36x = 590,018.58 × 168,559.98
  4. Step 4: Simplify right side
    393,345.36x = 99,453,520,044.43
  5. Step 5: Solve for x
    x = 99,453,520,044.43/393,345.36
  6. Step 6: Final answer
    x = 252,840.20

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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.