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Finding the Fourth Proportional to 113,568.36, 156,659.31 and 71,053.08

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Solution

The fourth proportional to 113,568.36, 156,659.31 and 71,053.08 is: 98,012.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,568.36 : 156,659.31 = 71,053.08 : x
  2. Step 2: Convert to fraction form
    113,568.36/156,659.31 = 71,053.08/x
  3. Step 3: Cross multiply
    113,568.36x = 156,659.31 × 71,053.08
  4. Step 4: Simplify right side
    113,568.36x = 11,131,126,486.17
  5. Step 5: Solve for x
    x = 11,131,126,486.17/113,568.36
  6. Step 6: Final answer
    x = 98,012.57

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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.