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Finding the Fourth Proportional to 511,909.14, 706,690.37 and 318,379.23

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Solution

The fourth proportional to 511,909.14, 706,690.37 and 318,379.23 is: 439,522.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,909.14 : 706,690.37 = 318,379.23 : x
  2. Step 2: Convert to fraction form
    511,909.14/706,690.37 = 318,379.23/x
  3. Step 3: Cross multiply
    511,909.14x = 706,690.37 × 318,379.23
  4. Step 4: Simplify right side
    511,909.14x = 224,995,535,849.02
  5. Step 5: Solve for x
    x = 224,995,535,849.02/511,909.14
  6. Step 6: Final answer
    x = 439,522.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.