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Finding the Fourth Proportional to 289,911.51, 400,121.62 and 176,799.87

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Solution

The fourth proportional to 289,911.51, 400,121.62 and 176,799.87 is: 244,010.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,911.51 : 400,121.62 = 176,799.87 : x
  2. Step 2: Convert to fraction form
    289,911.51/400,121.62 = 176,799.87/x
  3. Step 3: Cross multiply
    289,911.51x = 400,121.62 × 176,799.87
  4. Step 4: Simplify right side
    289,911.51x = 70,741,450,400.19
  5. Step 5: Solve for x
    x = 70,741,450,400.19/289,911.51
  6. Step 6: Final answer
    x = 244,010.49

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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.