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Finding the Fourth Proportional to 693,173.96, 956,472.20 and 391,361.48

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Solution

The fourth proportional to 693,173.96, 956,472.20 and 391,361.48 is: 540,017.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,173.96 : 956,472.20 = 391,361.48 : x
  2. Step 2: Convert to fraction form
    693,173.96/956,472.20 = 391,361.48/x
  3. Step 3: Cross multiply
    693,173.96x = 956,472.20 × 391,361.48
  4. Step 4: Simplify right side
    693,173.96x = 374,326,375,770.86
  5. Step 5: Solve for x
    x = 374,326,375,770.86/693,173.96
  6. Step 6: Final answer
    x = 540,017.94

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1.5x scale

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.