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Finding the Fourth Proportional to 209,893.32, 289,644.30 and 114,397.96

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Solution

The fourth proportional to 209,893.32, 289,644.30 and 114,397.96 is: 157,864.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,893.32 : 289,644.30 = 114,397.96 : x
  2. Step 2: Convert to fraction form
    209,893.32/289,644.30 = 114,397.96/x
  3. Step 3: Cross multiply
    209,893.32x = 289,644.30 × 114,397.96
  4. Step 4: Simplify right side
    209,893.32x = 33,134,717,045.63
  5. Step 5: Solve for x
    x = 33,134,717,045.63/209,893.32
  6. Step 6: Final answer
    x = 157,864.56

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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.