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Finding the Fourth Proportional to 208,656.22, 313,016.91 and 66,533.35

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Solution

The fourth proportional to 208,656.22, 313,016.91 and 66,533.35 is: 99,810.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,656.22 : 313,016.91 = 66,533.35 : x
  2. Step 2: Convert to fraction form
    208,656.22/313,016.91 = 66,533.35/x
  3. Step 3: Cross multiply
    208,656.22x = 313,016.91 × 66,533.35
  4. Step 4: Simplify right side
    208,656.22x = 20,826,063,183.81
  5. Step 5: Solve for x
    x = 20,826,063,183.81/208,656.22
  6. Step 6: Final answer
    x = 99,810.41

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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.