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Finding the Fourth Proportional to 528,642.14, 792,956.33 and 129,286.37

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Solution

The fourth proportional to 528,642.14, 792,956.33 and 129,286.37 is: 193,927.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,642.14 : 792,956.33 = 129,286.37 : x
  2. Step 2: Convert to fraction form
    528,642.14/792,956.33 = 129,286.37/x
  3. Step 3: Cross multiply
    528,642.14x = 792,956.33 × 129,286.37
  4. Step 4: Simplify right side
    528,642.14x = 102,518,440,863.01
  5. Step 5: Solve for x
    x = 102,518,440,863.01/528,642.14
  6. Step 6: Final answer
    x = 193,927.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.