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Finding the Fourth Proportional to 621,883.36, 858,188.98 and 349,951.11

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Solution

The fourth proportional to 621,883.36, 858,188.98 and 349,951.11 is: 482,926.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,883.36 : 858,188.98 = 349,951.11 : x
  2. Step 2: Convert to fraction form
    621,883.36/858,188.98 = 349,951.11/x
  3. Step 3: Cross multiply
    621,883.36x = 858,188.98 × 349,951.11
  4. Step 4: Simplify right side
    621,883.36x = 300,324,186,140.77
  5. Step 5: Solve for x
    x = 300,324,186,140.77/621,883.36
  6. Step 6: Final answer
    x = 482,926.87

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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.