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Finding the Fourth Proportional to 68,591.19, 103,400.89 and 64,019.00

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Solution

The fourth proportional to 68,591.19, 103,400.89 and 64,019.00 is: 96,508.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,591.19 : 103,400.89 = 64,019.00 : x
  2. Step 2: Convert to fraction form
    68,591.19/103,400.89 = 64,019.00/x
  3. Step 3: Cross multiply
    68,591.19x = 103,400.89 × 64,019.00
  4. Step 4: Simplify right side
    68,591.19x = 6,619,621,453.84
  5. Step 5: Solve for x
    x = 6,619,621,453.84/68,591.19
  6. Step 6: Final answer
    x = 96,508.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.