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Finding the Fourth Proportional to 693,170.94, 956,468.06 and 391,358.46

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Solution

The fourth proportional to 693,170.94, 956,468.06 and 391,358.46 is: 540,013.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,170.94 : 956,468.06 = 391,358.46 : x
  2. Step 2: Convert to fraction form
    693,170.94/956,468.06 = 391,358.46/x
  3. Step 3: Cross multiply
    693,170.94x = 956,468.06 × 391,358.46
  4. Step 4: Simplify right side
    693,170.94x = 374,321,867,000.79
  5. Step 5: Solve for x
    x = 374,321,867,000.79/693,170.94
  6. Step 6: Final answer
    x = 540,013.79

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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.