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Finding the Fourth Proportional to 606,217.36, 836,433.66 and 391,311.40

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Solution

The fourth proportional to 606,217.36, 836,433.66 and 391,311.40 is: 539,915.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,217.36 : 836,433.66 = 391,311.40 : x
  2. Step 2: Convert to fraction form
    606,217.36/836,433.66 = 391,311.40/x
  3. Step 3: Cross multiply
    606,217.36x = 836,433.66 × 391,311.40
  4. Step 4: Simplify right side
    606,217.36x = 327,306,026,501.72
  5. Step 5: Solve for x
    x = 327,306,026,501.72/606,217.36
  6. Step 6: Final answer
    x = 539,915.30

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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.