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Finding the Fourth Proportional to 391,256.91, 586,836.36 and 124,995.33

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Solution

The fourth proportional to 391,256.91, 586,836.36 and 124,995.33 is: 187,477.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,256.91 : 586,836.36 = 124,995.33 : x
  2. Step 2: Convert to fraction form
    391,256.91/586,836.36 = 124,995.33/x
  3. Step 3: Cross multiply
    391,256.91x = 586,836.36 × 124,995.33
  4. Step 4: Simplify right side
    391,256.91x = 73,351,804,474.20
  5. Step 5: Solve for x
    x = 73,351,804,474.20/391,256.91
  6. Step 6: Final answer
    x = 187,477.34

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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.