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Finding the Fourth Proportional to 693,369.47, 956,944.89 and 399,013.13

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Solution

The fourth proportional to 693,369.47, 956,944.89 and 399,013.13 is: 550,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,369.47 : 956,944.89 = 399,013.13 : x
  2. Step 2: Convert to fraction form
    693,369.47/956,944.89 = 399,013.13/x
  3. Step 3: Cross multiply
    693,369.47x = 956,944.89 × 399,013.13
  4. Step 4: Simplify right side
    693,369.47x = 381,833,569,016.62
  5. Step 5: Solve for x
    x = 381,833,569,016.62/693,369.47
  6. Step 6: Final answer
    x = 550,692.80

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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.