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Finding the Fourth Proportional to 511,911.57, 706,693.71 and 318,381.66

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Solution

The fourth proportional to 511,911.57, 706,693.71 and 318,381.66 is: 439,525.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,911.57 : 706,693.71 = 318,381.66 : x
  2. Step 2: Convert to fraction form
    511,911.57/706,693.71 = 318,381.66/x
  3. Step 3: Cross multiply
    511,911.57x = 706,693.71 × 318,381.66
  4. Step 4: Simplify right side
    511,911.57x = 224,998,317,695.29
  5. Step 5: Solve for x
    x = 224,998,317,695.29/511,911.57
  6. Step 6: Final answer
    x = 439,525.76

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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.