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Finding the Fourth Proportional to 693,036, 956,389.68 and 391,249.44

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Solution

The fourth proportional to 693,036, 956,389.68 and 391,249.44 is: 539,924.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,036 : 956,389.68 = 391,249.44 : x
  2. Step 2: Convert to fraction form
    693,036/956,389.68 = 391,249.44/x
  3. Step 3: Cross multiply
    693,036x = 956,389.68 × 391,249.44
  4. Step 4: Simplify right side
    693,036x = 374,186,926,721.78
  5. Step 5: Solve for x
    x = 374,186,926,721.78/693,036
  6. Step 6: Final answer
    x = 539,924.23

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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.