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Finding the Fourth Proportional to 209,883.30, 289,630.51 and 114,387.94

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Solution

The fourth proportional to 209,883.30, 289,630.51 and 114,387.94 is: 157,850.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,883.30 : 289,630.51 = 114,387.94 : x
  2. Step 2: Convert to fraction form
    209,883.30/289,630.51 = 114,387.94/x
  3. Step 3: Cross multiply
    209,883.30x = 289,630.51 × 114,387.94
  4. Step 4: Simplify right side
    209,883.30x = 33,130,237,400.05
  5. Step 5: Solve for x
    x = 33,130,237,400.05/209,883.30
  6. Step 6: Final answer
    x = 157,850.76

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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.