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Finding the Fourth Proportional to 633,391.44, 873,939.74 and 375,139.54

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Solution

The fourth proportional to 633,391.44, 873,939.74 and 375,139.54 is: 517,609.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,391.44 : 873,939.74 = 375,139.54 : x
  2. Step 2: Convert to fraction form
    633,391.44/873,939.74 = 375,139.54/x
  3. Step 3: Cross multiply
    633,391.44x = 873,939.74 × 375,139.54
  4. Step 4: Simplify right side
    633,391.44x = 327,849,352,051.32
  5. Step 5: Solve for x
    x = 327,849,352,051.32/633,391.44
  6. Step 6: Final answer
    x = 517,609.38

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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.