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Finding the Fourth Proportional to 113,091.90, 169,722.09 and 43,107.90

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Solution

The fourth proportional to 113,091.90, 169,722.09 and 43,107.90 is: 64,693.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,091.90 : 169,722.09 = 43,107.90 : x
  2. Step 2: Convert to fraction form
    113,091.90/169,722.09 = 43,107.90/x
  3. Step 3: Cross multiply
    113,091.90x = 169,722.09 × 43,107.90
  4. Step 4: Simplify right side
    113,091.90x = 7,316,362,883.51
  5. Step 5: Solve for x
    x = 7,316,362,883.51/113,091.90
  6. Step 6: Final answer
    x = 64,693.96

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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.