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Finding the Fourth Proportional to 693,171.94, 956,469.44 and 391,359.46

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Solution

The fourth proportional to 693,171.94, 956,469.44 and 391,359.46 is: 540,015.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,171.94 : 956,469.44 = 391,359.46 : x
  2. Step 2: Convert to fraction form
    693,171.94/956,469.44 = 391,359.46/x
  3. Step 3: Cross multiply
    693,171.94x = 956,469.44 × 391,359.46
  4. Step 4: Simplify right side
    693,171.94x = 374,323,363,544.90
  5. Step 5: Solve for x
    x = 374,323,363,544.90/693,171.94
  6. Step 6: Final answer
    x = 540,015.17

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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.