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Finding the Fourth Proportional to 693,285.27, 956,645.75 and 406,700.79

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Solution

The fourth proportional to 693,285.27, 956,645.75 and 406,700.79 is: 561,195.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,285.27 : 956,645.75 = 406,700.79 : x
  2. Step 2: Convert to fraction form
    693,285.27/956,645.75 = 406,700.79/x
  3. Step 3: Cross multiply
    693,285.27x = 956,645.75 × 406,700.79
  4. Step 4: Simplify right side
    693,285.27x = 389,068,579,704.47
  5. Step 5: Solve for x
    x = 389,068,579,704.47/693,285.27
  6. Step 6: Final answer
    x = 561,195.51

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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.