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Finding the Fourth Proportional to 113,720.63, 170,300.62 and 71,495.96

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Solution

The fourth proportional to 113,720.63, 170,300.62 and 71,495.96 is: 107,067.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,720.63 : 170,300.62 = 71,495.96 : x
  2. Step 2: Convert to fraction form
    113,720.63/170,300.62 = 71,495.96/x
  3. Step 3: Cross multiply
    113,720.63x = 170,300.62 × 71,495.96
  4. Step 4: Simplify right side
    113,720.63x = 12,175,806,562.51
  5. Step 5: Solve for x
    x = 12,175,806,562.51/113,720.63
  6. Step 6: Final answer
    x = 107,067.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.