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Finding the Fourth Proportional to 201,573.97, 278,174.18 and 115,531.11

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Solution

The fourth proportional to 201,573.97, 278,174.18 and 115,531.11 is: 159,434.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,573.97 : 278,174.18 = 115,531.11 : x
  2. Step 2: Convert to fraction form
    201,573.97/278,174.18 = 115,531.11/x
  3. Step 3: Cross multiply
    201,573.97x = 278,174.18 × 115,531.11
  4. Step 4: Simplify right side
    201,573.97x = 32,137,772,077.57
  5. Step 5: Solve for x
    x = 32,137,772,077.57/201,573.97
  6. Step 6: Final answer
    x = 159,434.14

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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.