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Finding the Fourth Proportional to 693,460.86, 956,994.93 and 391,654.86

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Solution

The fourth proportional to 693,460.86, 956,994.93 and 391,654.86 is: 540,494.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,460.86 : 956,994.93 = 391,654.86 : x
  2. Step 2: Convert to fraction form
    693,460.86/956,994.93 = 391,654.86/x
  3. Step 3: Cross multiply
    693,460.86x = 956,994.93 × 391,654.86
  4. Step 4: Simplify right side
    693,460.86x = 374,811,715,329.86
  5. Step 5: Solve for x
    x = 374,811,715,329.86/693,460.86
  6. Step 6: Final answer
    x = 540,494.41

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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.